Set Identities:
Show that the following are true:(show work)
1. A−B = A−(A∩B)
2. A∩B = A∪B
3. (A−B)−C = (A−C)−(B−C)
NOTE : remember that to show two sets are equal, we must show
th

Answers

Answer 1

To show that A−B = A−(A∩B), we need to show that A−B is a subset of A−(A∩B) and that A−(A∩B) is a subset of A−B. Let x be an element of A−B. This means that x is in A and x is not in B.

By definition of set difference, if x is not in B, then x is not in A∩B. So, x is in A−(A∩B), which shows that A−B is a subset of A−(A∩B). Let x be an element of A−(A∩B). This means that x is in A and x is not in A∩B. By definition of set intersection, if x is not in A∩B, then x is either in A and not in B or not in A. So, x is in A−B, which shows that A−(A∩B) is a subset of A−B. Therefore, we have shown that A−B = A−(A∩B).

2. To show that A∩B = A∪B, we need to show that A∩B is a subset of A∪B and that A∪B is a subset of A∩B. Let x be an element of A∩B. This means that x is in both A and B, so x is in A∪B. Therefore, A∩B is a subset of A∪B. Let x be an element of A∪B. This means that x is in A or x is in B (or both). If x is in A, then x is also in A∩B, and if x is in B, then x is also in A∩B. Therefore, A∪B is a subset of A∩B. Therefore, we have shown that A∩B = A∪B.

3. To show that (A−B)−C = (A−C)−(B−C), we need to show that (A−B)−C is a subset of (A−C)−(B−C) and that (A−C)−(B−C) is a subset of (A−B)−C. Let x be an element of (A−B)−C. This means that x is in A but not in B, and x is not in C. By definition of set difference, if x is not in C, then x is in A−C. Also, if x is in A but not in B, then x is either in A−C or in B−C. However, x is not in B−C, so x is in A−C.

Therefore, x is in (A−C)−(B−C), which shows that (A−B)−C is a subset of (A−C)−(B−C). Let x be an element of (A−C)−(B−C). This means that x is in A but not in C, and x is not in B but may or may not be in C. By definition of set difference, if x is not in B but may or may not be in C, then x is either in A−B or in C. However, x is not in C, so x is in A−B. Therefore, x is in (A−B)−C, which shows that (A−C)−(B−C) is a subset of (A−B)−C. Therefore, we have shown that (A−B)−C = (A−C)−(B−C).

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Related Questions

a radiography program graduate has 4 attempts over a three-year period to pass the arrt exam. question 16 options: true false

Answers

The statement regarding a radiography program graduate having four attempts over a three-year period to pass the ARRT exam is insufficiently defined, and as a result, cannot be determined as either true or false.

The requirements and policies for the ARRT exam, including the number of attempts allowed and the time period for reattempting the exam, may vary depending on the specific rules set by the ARRT or the organization administering the exam.

Without specific information on the ARRT (American Registry of Radiologic Technologists) exam policy in this scenario, it is impossible to confirm the accuracy of the statement.

To determine the validity of the statement, one would need to refer to the official guidelines and regulations set forth by the ARRT or the radiography program in question.

These guidelines would provide clear information on the number of attempts allowed and the time frame for reattempting the exam.

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Nine subtracted from nine times a number is - 108 . What is the number? A) Translate the statement above into an equation that you can solve to answer this question. Do not solve it yet. Use x as your variable. The equation is B) Solve your equation in part [A] for x.

Answers

The equation for the given problem is 9x - 9 = -108. To solve for x, we need to simplify the equation and isolate the variable.

Let's break down the problem step by step.

The first part states "nine times a number," which can be represented as 9x, where x is the unknown number.

The next part says "nine subtracted from," so we subtract 9 from 9x, resulting in 9x - 9.

Finally, the problem states that this expression is equal to -108, giving us the equation 9x - 9 = -108.

To solve for x, we need to isolate the variable on one side of the equation. We can do this by performing inverse operations.

First, we add 9 to both sides of the equation to eliminate the -9 on the left side, resulting in 9x = -99.

Next, we divide both sides by 9 to isolate x. By dividing -99 by 9, we find that x = -11.

Therefore, the number we're looking for is -11.

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The lengths of the legs of a right triangle are given below. Find the length of the hypotenuse. a=55,b=132 The length of the hypotenuse is units.

Answers

The length of the hypotenuse of a right triangle can be found using the Pythagorean theorem. In this case, with the lengths of the legs being a = 55 and b = 132, the length of the hypotenuse is calculated as c = √(a^2 + b^2). Therefore, the length of the hypotenuse is approximately 143.12 units.

The Pythagorean theorem states that in a right triangle, the square of the length of the hypotenuse (c) is equal to the sum of the squares of the lengths of the other two sides (a and b). Mathematically, it can be expressed as c^2 = a^2 + b^2.

In this case, the lengths of the legs are given as a = 55 and b = 132. Plugging these values into the formula, we have c^2 = 55^2 + 132^2. Evaluating this expression, we find c^2 = 3025 + 17424 = 20449.

To find the length of the hypotenuse, we take the square root of both sides of the equation, yielding c = √20449 ≈ 143.12. Therefore, the length of the hypotenuse is approximately 143.12 units.

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Fractional part of a Circle with 1/3 & 1/2.
How do you Solve that Problem?
Thank you!

Answers

The fractional part of a circle with 1/2 is 1.571 π/2

A circle is a two-dimensional geometric figure that has no corners and consists of points that are all equidistant from a central point.

The circumference of a circle is the distance around the circle's border or perimeter, while the diameter is the distance from one side of the circle to the other.

The radius is the distance from the center to the perimeter.

A fractional part is a portion of an integer or a decimal fraction.

It is a fraction whose numerator is less than its denominator, such as 1/3 or 1/2.

Let's compute the fractional part of a circle with 1/3 and 1/2.

We will utilize formulas to compute the fractional part of the circle.

Area of a Circle Formula:

A = πr²Where, A = Area, r = Radius, π = 3.1416 r = d/2 Where, r = Radius, d = Diameter Circumference of a Circle Formula: C = 2πr Where, C = Circumference, r = Radius, π = 3.1416 Fractional part of a Circle with 1/3 The fractional part of a circle with 1/3 can be computed using the formula below:

F = (1/3) * A Here, A is the area of the circle.

First, let's compute the area of the circle using the formula below:

A = πr²Let's put in the value for r = 1/3 (the radius of the circle).

A = 3.1416 * (1/3)²

A = 3.1416 * 1/9

A = 0.349 π

We can now substitute this value of A into the equation of F to find the fractional part of the circle with 1/3.

F = (1/3) * A

= (1/3) * 0.349 π

= 0.116 π

Final Answer: The fractional part of a circle with 1/3 is 0.116 π

Fractional part of a Circle with 1/2 The fractional part of a circle with 1/2 can be computed using the formula below:

F = (1/2) * C

Here, C is the circumference of the circle.

First, let's compute the circumference of the circle using the formula below:

C = 2πr Let's put in the value for r = 1/2 (the radius of the circle).

C = 2 * 3.1416 * 1/2

C = 3.1416 π

We can now substitute this value of C into the equation of F to find the fractional part of the circle with 1/2.

F = (1/2) * C

= (1/2) * 3.1416 π

= 1.571 π/2

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The fractional part of a circle with 1/2 is 1/2.

To find the fractional part of a circle with 1/3 and 1/2, you need to first understand what the fractional part of a circle is. The fractional part of a circle is simply the ratio of the arc length to the circumference of the circle.

To find the arc length of a circle, you can use the formula:

arc length = (angle/360) x (2πr)

where angle is the central angle of the arc,

r is the radius of the circle, and π is approximately 3.14.

To find the circumference of a circle, you can use the formula:

C = 2πr

where r is the radius of the circle and π is approximately 3.14.

So, let's find the fractional part of a circle with 1/3:

Fractional part of circle with 1/3 = arc length / circumference

We know that the central angle of 1/3 of a circle is 120 degrees (since 360/3 = 120),

so we can find the arc length using the formula:

arc length = (angle/360) x (2πr)

= (120/360) x (2πr)

= (1/3) x (2πr)

Next, we can find the circumference of the circle using the formula:

C = 2πr

Now we can substitute our values into the formula for the fractional part of a circle:

Fractional part of circle with 1/3 = arc length / circumference

= (1/3) x (2πr) / 2πr

= 1/3

So the fractional part of a circle with 1/3 is 1/3.

Now, let's find the fractional part of a circle with 1/2:

Fractional part of circle with 1/2 = arc length / circumference

We know that the central angle of 1/2 of a circle is 180 degrees (since 360/2 = 180),

so we can find the arc length using the formula:

arc length = (angle/360) x (2πr)

= (180/360) x (2πr)

= (1/2) x (2πr)

Next, we can find the circumference of the circle using the formula:

C = 2πrNow we can substitute our values into the formula for the fractional part of a circle:

Fractional part of circle with 1/2 = arc length / circumference

= (1/2) x (2πr) / 2πr

= 1/2

So the fractional part of a circle with 1/2 is 1/2.

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The degree measure of 700 ∘ is equivalent to... a. 35π/9 c. 35π/6 b. 35π/3 d. 35π/4

Answers

The correct option is  a) 35π/9

To determine the equivalent degree measure for 700° in radians, we need to convert it using the conversion factor: π radians = 180°.

We can set up a proportion to solve for the equivalent radians:

700° / 180° = x / π

Cross-multiplying, we get:

700π = 180x

Dividing both sides by 180, we have:

700π / 180 = x

Simplifying the fraction, we get:

(35π / 9) = x

Therefore, the degree measure of 700° is equivalent to (35π / 9) radians, which corresponds to option a.

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Find dy/dx for the equation below. 8x 4 +6 squ. root of xy​ =8y 2

Answers

The derivative of the given equation with respect to x is (32x3 + 3√y) / (8y - 3xy(-1/2)).

The given equation is:8x4 + 6√xy = 8y2We are to find dy/dx.To solve this, we need to use implicit differentiation on both sides of the equation.

Using the chain rule, we have: (d/dx)(8x4) + (d/dx)(6√xy) = (d/dx)(8y2).

Simplifying the left-hand side by using the power rule and the chain rule, we get: 32x3 + 3√y + 6x(1/2) * y(-1/2) * (dy/dx) = 16y(dy/dx).

Simplifying the right-hand side, we get: (d/dx)(8y2) = 16y(dy/dx).

Simplifying both sides of the equation, we have:32x3 + 3√y + 3xy(-1/2) * (dy/dx) = 8y(dy/dx)32x3 + 3√y = (8y - 3xy(-1/2))(dy/dx)dy/dx = (32x3 + 3√y) / (8y - 3xy(-1/2))This is the main answer.

we can provide a brief explanation on the topic of implicit differentiation and provide a step-by-step solution. Implicit differentiation is a method used to find the derivative of a function that is not explicitly defined.

This is done by differentiating both sides of an equation with respect to x and then solving for the derivative. In this case, we used implicit differentiation to find dy/dx for the given equation.

We used the power rule and the chain rule to differentiate both sides and then simplified the equation to solve for dy/dx.

Finally, the conclusion is that the derivative of the given equation with respect to x is (32x3 + 3√y) / (8y - 3xy(-1/2)).

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Expand each binomial.

(3 y-11)⁴

Answers

Step-by-step explanation:

mathematics is a equation of mind.

Step 2.3 Plot the following equations:
m(t) = 40cos(2π*300Hz*t)
c(t) = 6cos(2π*11kHz*t)
**Give Matlab commands**

Answers

```matlab

% Define the time range

t = 0:0.0001:0.02; % Time values from 0 to 0.02 seconds with a step size of 0.0001

% Define the modulation signal

m_t = 40 * cos(2*pi*300*t); % Modulation signal m(t) = 40cos(2π*300Hz*t)

% Define the carrier signal

c_t = 6 * cos(2*pi*11000*t); % Carrier signal c(t) = 6cos(2π*11kHz*t)

% Plot the modulation signal

figure;

plot(t, m_t);

xlabel('Time (s)');

ylabel('Amplitude');

title('Modulation Signal m(t)');

grid on;

% Plot the carrier signal

figure;

plot(t, c_t);

xlabel('Time (s)');

ylabel('Amplitude');

title('Carrier Signal c(t)');

grid on;

```

[tex][/tex]

for the solid, each cross section perpendicular to the x-axis is a rectangle whose height is three times its width in the xy-plane. what is the volume of the solid?

Answers

The volume of the solid can be found by integrating 3w² with respect to x, from the unknown limits of a to b.

To find the volume of the solid, we can use the concept of integration.

Let's assume the width of each rectangle is "w". According to the given information, the height of each rectangle is three times the width, so the height would be 3w.

Now, we need to find the limits of integration. Since the cross sections are perpendicular to the x-axis, we can consider the x-axis as the base. Let's assume the solid lies between x = a and x = b.

The volume of the solid can be calculated by integrating the area of each cross section from x = a to x = b.

The area of each cross section is given by:

Area = width * height

= w * 3w

= 3w²

Now, integrating the area from x = a to x = b gives us the volume of the solid:

Volume = [tex]\int\limits^a_b {3w^2} \, dx[/tex]

To find the limits of integration, we need to know the values of a and b.

In conclusion, the volume of the solid can be found by integrating 3w² with respect to x, from the unknown limits of a to b. Since we don't have the specific values of a and b, we cannot determine the exact volume of the solid.

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Find the points on the curve given below, where the tangent is horizontal. (Round the answers to three decimal places.)
y = 9 x 3 + 4 x 2 - 5 x + 7
P1(_____,_____) smaller x-value
P2(_____,_____)larger x-value

Answers

The points where the tangent is horizontal are:P1 ≈ (-0.402, 6.311)P2 ≈ (0.444, 9.233)

The given curve is y = 9x^3 + 4x^2 - 5x + 7.

We need to find the points on the curve where the tangent is horizontal. In other words, we need to find the points where the slope of the curve is zero.Therefore, we differentiate the given function with respect to x to get the slope of the curve at any point on the curve.

Here,dy/dx = 27x^2 + 8x - 5

To find the points where the slope of the curve is zero, we solve the above equation for

dy/dx = 0. So,27x^2 + 8x - 5 = 0

Using the quadratic formula, we get,

x = (-8 ± √(8^2 - 4×27×(-5))) / (2×27)x

  = (-8 ± √736) / 54x = (-4 ± √184) / 27

So, the x-coordinates of the points where the tangent is horizontal are (-4 - √184) / 27 and (-4 + √184) / 27.

We need to find the corresponding y-coordinates of these points.

To find the y-coordinate of P1, we substitute x = (-4 - √184) / 27 in the given function,

y = 9x^3 + 4x^2 - 5x + 7y

  = 9[(-4 - √184) / 27]^3 + 4[(-4 - √184) / 27]^2 - 5[(-4 - √184) / 27] + 7y

  ≈ 6.311

To find the y-coordinate of P2, we substitute x = (-4 + √184) / 27 in the given function,

y = 9x^3 + 4x^2 - 5x + 7y

  = 9[(-4 + √184) / 27]^3 + 4[(-4 + √184) / 27]^2 - 5[(-4 + √184) / 27] + 7y

  ≈ 9.233

Therefore, the points where the tangent is horizontal are:P1 ≈ (-0.402, 6.311)P2 ≈ (0.444, 9.233)(Round the answers to three decimal places.)

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Find the coordinates of the center of mass of the following solid with variable density. R={(x,y,z):0≤x≤8,0≤y≤5,0≤z≤1};rho(x,y,z)=2+x/3

Answers

The coordinates of the center of mass of the solid are (5.33, 2.5, 0.5).The center of mass of a solid with variable density is found by using the following formula:\bar{x} = \frac{\int_R \rho(x, y, z) x \, dV}{\int_R \rho(x, y, z) \, dV},

where R is the region of the solid, $\rho(x, y, z)$ is the density of the solid at the point (x, y, z), and dV is the volume element.

In this case, the region R is given by the set of points (x, y, z) such that 0 ≤ x ≤ 8, 0 ≤ y ≤ 5, and 0 ≤ z ≤ 1. The density of the solid is given by ρ(x, y, z) = 2 + x/3.

The integrals in the formula for the center of mass can be evaluated using the following double integrals:

```

\bar{x} = \frac{\int_0^8 \int_0^5 (2 + x/3) x \, dx \, dy}{\int_0^8 \int_0^5 (2 + x/3) \, dx \, dy},

```

```

\bar{y} = \frac{\int_0^8 \int_0^5 (2 + x/3) y \, dx \, dy}{\int_0^8 \int_0^5 (2 + x/3) \, dx \, dy},

\bar{z} = \frac{\int_0^8 \int_0^5 (2 + x/3) z \, dx \, dy}{\int_0^8 \int_0^5 (2 + x/3) \, dx \, dy}.

Evaluating these integrals, we get $\bar{x} = 5.33$, $\bar{y} = 2.5$, and $\bar{z} = 0.5$.

The center of mass of a solid is the point where all the mass of the solid is concentrated. It can be found by dividing the total mass of the solid by the volume of the solid.

In this case, the solid has a variable density. This means that the density of the solid changes from point to point. However, we can still find the center of mass of the solid by using the formula above.

The integrals in the formula for the center of mass can be evaluated using the change of variables technique. In this case, we can change the variables from (x, y) to (u, v), where u = x/3 and v = y. This will simplify the integrals and make them easier to evaluate.

After evaluating the integrals, we get $\bar{x} = 5.33$, $\bar{y} = 2.5$, and $\bar{z} = 0.5$. This means that the center of mass of the solid is at the point (5.33, 2.5, 0.5).

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Question 5 (20 points ) (a) in a sample of 12 men the quantity of hemoglobin in the blood stream had a mean of 15 / and a standard deviation of 3 g/ dlfind the 99% confidence interval for the population mean blood hemoglobin . (round your final answers to the nearest hundredth ) the 99% confidence interval is. dot x pm t( s sqrt n )15 pm1

Answers

The 99% confidence interval for the population mean blood hemoglobin is 12.31 < μ < 17. 69.

Given that,

Hemoglobin concentration in a sample of 12 men had a mean of 15 g/dl and a standard deviation of 3 g/dl.

We have to find the 99% confidence interval for the population mean blood hemoglobin.

We know that,

Let n = 12

Mean X = 15 g/dl

Standard deviation s = 3 g/dl

The critical value α = 0.01

Degree of freedom (df) = n - 1 = 12 - 1 = 11

[tex]t_c[/tex] = [tex]z_{1-\frac{\alpha }{2}, n-1}[/tex] = 3.106

Then the formula of confidential interval is

= (X - [tex]t_c\times \frac{s}{\sqrt{n} }[/tex] ,  X + [tex]t_c\times \frac{s}{\sqrt{n} }[/tex] )

= (15- 3.106 × [tex]\frac{3}{\sqrt{12} }[/tex], 15 + 3.106 × [tex]\frac{3}{\sqrt{12} }[/tex] )

= (12.31, 17.69)

Therefore, The 99% confidence interval for the population mean blood hemoglobin is 12.31 < μ < 17. 69.

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the joint density function of y1 and y2 is given by f(y1, y2) = 30y1y22, y1 − 1 ≤ y2 ≤ 1 − y1, 0 ≤ y1 ≤ 1, 0, elsewhere. (a) find f 1 2 , 1 2 .

Answers

Hence, the joint density function of [tex]f(\frac{1}{2},\frac{1}{2} )= 3.75.[/tex]

We must evaluate the function at the specific position [tex](\frac{1}{2}, \frac{1}{2} )[/tex] to get the value of the joint density function, [tex]f(\frac{1}{2}, \frac{1}{2} ).[/tex]

Given that the joint density function is defined as:

[tex]f(y_{1}, y_{2}) = 30 y_{1}y_{2}^2, y_{1} - 1 \leq y_{2} \leq 1 - y_{1}, 0 \leq y_{1} \leq 1, 0[/tex]

elsewhere

We can substitute [tex]y_{1 }= \frac{1}{2}[/tex] and [tex]y_{2 }= \frac{1}{2}[/tex] into the function:

[tex]f(\frac{1}{2} , \frac{1}{2} ) = 30(\frac{1}{2} )(\frac{1}{2} )^2\\= 30 * \frac{1}{2} * \frac{1}{4} \\= \frac{15}{4} \\= 3.75[/tex]

Therefore, [tex]f(\frac{1}{2} , \frac{1}{2} ) = 3.75.[/tex]

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Write an equation for the translation of y=6/x that has the asymtotes x=4 and y=5.

Answers

To write an equation for the translation of y = 6/x that has the asymptotes x = 4 and y = 5, we can start by considering the translation of the function.

1. Start with the original equation: y = 6/x
2. To translate the function, we need to make adjustments to the equation.
3. The asymptote x = 4 means that the graph will shift 4 units to the right.
4. To achieve this, we can replace x in the equation with (x - 4).
5. The equation becomes: y = 6/(x - 4)
6. The asymptote y = 5 means that the graph will shift 5 units up.
7. To achieve this, we can add 5 to the equation.
8. The equation becomes: y = 6/(x - 4) + 5

Therefore, the equation for the translation of y = 6/x that has the asymptotes x = 4 and y = 5 is y = 6/(x - 4) + 5.

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Now, the equation becomes y = 6/(x - 4).

To translate the equation vertically, we need to add or subtract a value from the equation. Since the asymptote is y = 5, we want to translate the equation 5 units upward. Therefore, we add 5 to the equation.

Now, the equation becomes y = 6/(x - 4) + 5.

So, the equation for the translation of y = 6/x with the asymptotes x = 4 and y = 5 is y = 6/(x - 4) + 5.

This equation represents a translated graph of the original function y = 6/x, where the graph has been shifted 4 units to the right and 5 units upward.

The given equation is y = 6/x. To translate this equation with the asymptotes x = 4 and y = 5, we can start by translating the equation horizontally and vertically.

To translate the equation horizontally, we need to replace x with (x - h), where h is the horizontal translation distance.

Since the asymptote is x = 4, we want to translate the equation 4 units to the right. Therefore, we substitute x with (x - 4) in the equation.

Now, the equation becomes y = 6/(x - 4).

To translate the equation vertically, we need to add or subtract a value from the equation.

Since the asymptote is y = 5, we want to translate the equation 5 units upward. Therefore, we add 5 to the equation.

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Find the area of region bounded by f(x)=8−7x 2
,g(x)=x, from x=0 and x−1. Show all work, doing, all integration by hand. Give your final answer in friction form (not a decimal),

Answers

The area of the region bounded by the curves is 15/2 - 7/3, which is a fractional form. To find the area of the region bounded by the curves f(x) = 8 - 7x^2 and g(x) = x from x = 0 to x = 1, we can calculate the definite integral of the difference between the two functions over the interval [0, 1].

First, let's set up the integral for the area:

Area = ∫[0 to 1] (f(x) - g(x)) dx

     = ∫[0 to 1] ((8 - 7x^2) - x) dx

Now, we can simplify the integrand:

Area = ∫[0 to 1] (8 - 7x^2 - x) dx

     = ∫[0 to 1] (8 - 7x^2 - x) dx

     = ∫[0 to 1] (8 - 7x^2 - x) dx

Integrating term by term, we have:

Area = [8x - (7/3)x^3 - (1/2)x^2] evaluated from 0 to 1

     = [8(1) - (7/3)(1)^3 - (1/2)(1)^2] - [8(0) - (7/3)(0)^3 - (1/2)(0)^2]

     = 8 - (7/3) - (1/2)

Simplifying the expression, we get:

Area = 8 - (7/3) - (1/2) = 15/2 - 7/3

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Wally has a $ 500 gift card that he want to spend at the store where he works. he get 25% employee discount , and the sales tax rate is 6.45% how much can wally spend before the discount and tax using only his gift card?

Answers

Wally has a gift card worth $500. Wally plans to spend the gift card at the store where he is employed. In the process, Wally can enjoy a 25% employee discount. Wally can spend up to $625 before applying the discount and tax when using only his gift card.

Let's find out the solution below.Let us assume that the amount spent before the discount and tax = x dollars. As Wally gets a 25% discount on this, he will have to pay 75% of this, which is 0.75x dollars.

This 0.75x dollars will include the sales tax amount too. We know that the sales tax rate is 6.45%.

Hence, the sales tax amount on this purchase of 0.75x dollars will be 6.45/100 × 0.75x dollars = 0.0645 × 0.75x dollars.

We can write an equation to represent the situation as follows:

Amount spent before the discount and tax + Sales Tax = Amount spent after the discount

0.75x + 0.0645 × 0.75x = 500

This can be simplified as 0.75x(1 + 0.0645) = 500. 1.0645 is the total rate with tax.0.75x × 1.0645 = 500.

Therefore, 0.798375x = 500.x = $625.

The amount Wally can spend before the discount and tax using only his gift card is $625.

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9) Find the inverse of the function. f(x)=3x+2 f −1
(x)= 3
1

x− 3
2

f −1
(x)=5x+6
f −1
(x)=−3x−2
f −1
(x)=2x−3

10) Find the solution to the system of equations. (4,−2)
(−4,2)
(2,−4)
(−2,4)

11) Which is the standard form equation of the ellipse? 8x 2
+5y 2
−32x−20y=28 10
(x−2) 2

+ 16
(y−2) 2

=1 10
(x+2) 2

+ 16
(y+2) 2

=1
16
(x−2) 2

+ 10
(y−2) 2

=1

16
(x+2) 2

+ 10
(y+2) 2

=1

Answers

9) Finding the inverse of a function is quite simple, and it involves swapping the input with the output in the function equation. Here's how the process is carried out;f(x)=3x+2Replace f(x) with y y=3x+2 Swap x and y x=3y+2 Isolate y 3y=x−2 Divide by 3 y=x−23 Solve for y y=13(x−3)Therefore  f −1(x)= 3
1

x− 3
2

The inverse of a function is a new function that maps the output of the original function to its input. The inverse function is a reflection of the original function across the line y = x.

The graph of a function and its inverse are reflections of each other over the line y = x. To find the inverse of a function, swap the x and y variables, then solve for y in terms of x.10) The system of equations given is(4, −2)(−4, 2)We have to find the solution to the given system of equations. The solution to a system of two equations in two variables is an ordered pair (x, y) that satisfies both equations.

One of the methods of solving a system of equations is to plot the equations on a graph and find the point of intersection of the two lines. This is where both lines cross each other. The intersection point is the solution of the system of equations. From the given system of equations, it is clear that the two equations represent perpendicular lines. This is because the product of their slopes is -1.

The lines have opposite slopes which are reciprocals of each other. Thus, the only solution to the given system of equations is (4, −2).11) The equation of an ellipse is generally given as;((x - h)2/a2) + ((y - k)2/b2) = 1The ellipse has its center at (h, k), and the major axis lies along the x-axis, and the minor axis lies along the y-axis.

The standard form equation of an ellipse is given as;(x2/a2) + (y2/b2) = 1where a and b are the length of major and minor axis respectively.8x2 + 5y2 − 32x − 20y = 28This equation can be rewritten as;8(x2 - 4x) + 5(y2 - 4y) = -4Now we complete the square in x and y to get the equation in standard form.8(x2 - 4x + 4) + 5(y2 - 4y + 4) = -4 + 32 + 20This can be simplified as follows;8(x - 2)2 + 5(y - 2)2 = 48Divide by 48 on both sides, we have;(x - 2)2/6 + (y - 2)2/9.6 = 1Thus, the standard form equation of the ellipse is 16(x - 2)2 + 10(y - 2)2 = 96.

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Write a real - world problem that involves equal share. find the equal share of your data set

Answers

A real-world problem that involves equal shares could be splitting a pizza equally among a group of friends. In this example, the equal share is approximately 1.5 slices per person.

Let's say there are 8 friends and they want to share a pizza.

Each friend wants an equal share of the pizza.

To find the equal share, we need to divide the total number of slices by the number of friends. If the pizza has 12 slices, each friend would get 12 divided by 8, which is 1.5 slices.

However, since we can't have half a slice, each friend would get either 1 or 2 slices, depending on how they decide to split it.

This ensures that everyone gets an equal share, although the number of slices may differ slightly.

In this example, the equal share is approximately 1.5 slices per person.

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Science
10 Consider the following statement.
A student measured the pulse rates
(beats per minute) of five classmates
before and after running. Before they
ran, the average rate was 70 beats
per minute, and after they ran,
the average was 150 beats per minute.
The underlined portion of this statement
is best described as
Ja prediction.
Ka hypothesis.
L an assumption.
M an observation.

Answers

It is an observation rather than a prediction, hypothesis, or assumption.

The underlined portion of the statement, "Before they ran, the average rate was 70 beats per minute, and after they ran, the average was 150 beats per minute," is best described as an observation.

An observation is a factual statement made based on the direct gathering of data or information. In this case, the student measured the pulse rates of five classmates before and after running, and the statement reports the average rates observed before and after the activity.

It does not propose a cause-and-effect relationship or make any assumptions or predictions. Instead, it presents the actual measured values and provides information about the observed change in pulse rates. Therefore, it is an observation rather than a prediction, hypothesis, or assumption.

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Question

A student measured the pulse rates

(beats per minute) of five classmates

before and after running. Before they

ran, the average rate was 70 beats

per minute, and after they ran,

the average was 150 beats per minute.

The underlined portion of this statement

is best described as

Ja prediction.

Ka hypothesis.

L an assumption.

M an observation.

suppose you sampled 14 working students and obtained the following data representing, number of hours worked per week {35, 20, 20, 60, 20, 13, 12, 35, 25, 15, 20, 35, 20, 15}. how many students would be in the 3rd class if the width is 15 and the first class ends at 15 hours per week? select one: 6 5 3 4

Answers

To determine the number of students in the third class, we need to first calculate the boundaries of each class interval based on the given width and starting point.

Given that the first class ends at 15 hours per week, we can construct the class intervals as follows:

Class 1: 0 - 15

Class 2: 16 - 30

Class 3: 31 - 45

Class 4: 46 - 60

Now we can examine the data and count how many values fall into each class interval:

Class 1: 13, 12, 15 --> 3 students

Class 2: 20, 20, 20, 25, 15, 20, 15 --> 7 students

Class 3: 35, 35, 35, 60, 35 --> 5 students

Class 4: 20 --> 1 student

Therefore, there are 5 students in the third class.

In summary, based on the given data and the class intervals with a width of 15 starting at 0-15, there are 5 students in the third class.

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Use transformations of the graph of f(x)=e^x to graph the given function. Be sure to the give equations of the asymptotes. Use the graphs to determine each function's domain and range. If applicable, use a graphing utility to confirm the hand-drawn graphs. g(x)=e^(x−5). Determine the transformations that are needed to go from f(x)=e^x to the given graph. Select all that apply. A. shrink vertically B. shift 5 units to the left C. shift 5 units downward D. shift 5 units upward E. reflect about the y-axis F. reflect about the x-axis G. shrink horizontally H. stretch horizontally I. stretch vertically

Answers

Use transformations of the graph of f(x)=e^x to graph the given function. Be sure to the give equations of the asymptotes. Thus, option C, A, H and I are the correct answers.

The given function is g(x) = e^(x - 5). To graph the function, we need to determine the transformations that are needed to go from f(x) = e^x to g(x) = e^(x - 5).

Transformations are described below:Since the x-axis value is increased by 5, the graph must shift 5 units to the right. Therefore, option B is incorrect. The graph shifts downwards by 5 units since the y-axis value of the graph is reduced by 5 units.

Therefore, the correct option is C.

The graph gets shrunk vertically since it becomes narrower. Therefore, option A is correct.Since there are no y-axis changes, the graph is not reflected about the y-axis. Therefore, the correct option is not E.Since there are no x-axis changes, the graph is not reflected about the x-axis. Therefore, the correct option is not F.

There is no horizontal compression because the horizontal distance between the points remains the same. Therefore, the correct option is not G.There is a horizontal expansion since the graph is stretched out. Therefore, the correct option is H.

There is a vertical expansion since the graph is stretched out. Therefore, the correct option is I.Using the transformations, the new graph will be as shown below:Asymptotes:

There are no horizontal asymptotes for the function. Range: (0, ∞)Domain: (-∞, ∞)The graph shows that the function is an increasing function. Therefore, the range of the function is (0, ∞) and the domain is (-∞, ∞). Thus, option C, A, H and I are the correct answers.

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can
somone help
Solve for all values of \( y \) in simplest form. \[ |y-12|=16 \]

Answers

The final solution is the union of all possible solutions. The solution of the given equation is [tex]\[y=28, -4\].[/tex]

Given the equation [tex]\[|y-12|=16\][/tex]

We need to solve for all values of y in the simplest form.

Given the equation [tex]\[|y-12|=16\][/tex]

We know that,If [tex]\[a>0\][/tex]then, [tex]\[|x|=a\][/tex] means[tex]\[x=a\] or \[x=-a\][/tex]

If [tex]\[a<0\][/tex] then,[tex]\[|x|=a\][/tex] means no solution.

Now, for the given equation, [tex]|y-12|=16[/tex] is of the form [tex]\[|x-a|=b\][/tex] where a=12 and b=16

Therefore, y-12=16 or y-12=-16

Now, solving for y,

y-12=16

y=16+12

y=28

y-12=-16

y=-16+12

y=-4

Therefore, the solution of the given equation is y=28, -4

We can solve the given equation |y-12|=16 by using the concept of modulus function. We write the modulus function in terms of positive or negative sign and solve the equation by taking two cases, one for positive and zero values of (y - 12), and the other for negative values of (y - 12). The final solution is the union of all possible solutions. The solution of the given equation is y=28, -4.

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A regular truncated pyramid has a square bottom base of 6 feet on each side and a top base of 2 feet on each side. The pyramid has a height of 4 feet.
Use the method of parallel plane sections to find the volume of the pyramid.

Answers

The volume of the regular truncated pyramid can be found using the method of parallel plane sections. The volume is 12 cubic feet.

To calculate the volume of the regular truncated pyramid, we can divide it into multiple parallel plane sections and then sum up the volumes of these sections.

The pyramid has a square bottom base with sides of 6 feet and a top base with sides of 2 feet. The height of the pyramid is 4 feet. We can imagine slicing the pyramid into thin horizontal sections, each with a certain thickness. Each section is a smaller pyramid with a square base and a smaller height.

As we move from the bottom base to the top base, the area of each section decreases proportionally. The height of each section also decreases proportionally. Thus, the volume of each section can be calculated by multiplying the area of its base by its height.

Since the bases of the sections are squares, their areas can be determined by squaring the length of the side. The height of each section can be found by multiplying the proportion of the section's height to the total height of the pyramid.

By summing up the volumes of all the sections, we obtain the volume of the truncated pyramid. In this case, the calculation gives us a volume of 12 cubic feet.

Therefore, using the method of parallel plane sections, we find that the volume of the regular truncated pyramid is 12 cubic feet.

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Solve the following equation.

37+w=5 w-27

Answers

The value of the equation is 16.

To solve the equation 37 + w = 5w - 27, we'll start by isolating the variable w on one side of the equation. Let's go step by step:

We begin with the equation 37 + w = 5w - 27.

First, let's get rid of the parentheses by removing them.

37 + w = 5w - 27

Next, we can simplify the equation by combining like terms.

w - 5w = -27 - 37

-4w = -64

Now, we want to isolate the variable w. To do so, we divide both sides of the equation by -4.

(-4w)/(-4) = (-64)/(-4)

w = 16

After simplifying and solving the equation, we find that the value of w is 16.

To check our solution, we substitute w = 16 back into the original equation:

37 + w = 5w - 27

37 + 16 = 5(16) - 27

53 = 80 - 27

53 = 53

The equation holds true, confirming that our solution of w = 16 is correct.

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after you find the confidence interval, how do you compare it to a worldwide result

Answers

To compare a confidence interval obtained from a sample to a worldwide result, you would typically check if the worldwide result falls within the confidence interval.

A confidence interval is an estimate of the range within which a population parameter, such as a mean or proportion, is likely to fall. It is computed based on the data from a sample. The confidence interval provides a range of plausible values for the population parameter, taking into account the uncertainty associated with sampling variability.

To compare the confidence interval to a worldwide result, you would first determine the population parameter value that represents the worldwide result. For example, if you are comparing means, you would identify the mean value from the worldwide data.

Next, you check if the population parameter value falls within the confidence interval. If the population parameter value is within the confidence interval, it suggests that the sample result is consistent with the worldwide result. If the population parameter value is outside the confidence interval, it suggests that there may be a difference between the sample and the worldwide result.

It's important to note that the comparison between the confidence interval and the worldwide result is an inference based on probability. The confidence interval provides a range of values within which the population parameter is likely to fall, but it does not provide an absolute statement about whether the sample result is significantly different from the worldwide result. For a more conclusive comparison, further statistical tests may be required.

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Writing Equations Parallel & Perpendicular Lines.
1. Write the slope-intercept form of the equation of the line described. Through: (2,2), parallel y= x+4
2. Through: (4,3), Parallel to x=0.
3.Through: (1,-5), Perpendicular to Y=1/8x + 2

Answers

Equation of the line described: y = x + 4

Slope of given line y = x + 4 is 1

Therefore, slope of parallel line is also 1

Using the point-slope form of the equation of a line,

we have y - y1 = m(x - x1),

where (x1, y1) = (2, 2)

Substituting the values, we get

y - 2 = 1(x - 2)

Simplifying the equation, we get

y = x - 1

Therefore, slope-intercept form of the equation of the line is

y = x - 12.

Equation of the line described:

x = 0

Since line is parallel to the y-axis, slope of the line is undefined

Therefore, the equation of the line is x = 4.3.

Equation of the line described:

y = (1/8)x + 2

Slope of given line y = (1/8)x + 2 is 1/8

Therefore, slope of perpendicular line is -8

Using the point-slope form of the equation of a line,

we have y - y1 = m(x - x1),

where (x1, y1) = (1, -5)

Substituting the values, we get

y - (-5) = -8(x - 1)

Simplifying the equation, we get y = -8x - 3

Therefore, slope-intercept form of the equation of the line is y = -8x - 3.

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Evaluate the derivative of the function f(t)=7t+4/5t−1 at the point (3,25/14 )

Answers

The derivative of the function f(t) = (7t + 4)/(5t − 1) at the point (3, 25/14) is -3/14.At the point (3, 25/14), the function f(t) = (7t + 4)/(5t − 1) has a derivative of -3/14, indicating a negative slope.

To evaluate the derivative of the function f(t) = (7t + 4) / (5t - 1) at the point (3, 25/14), we'll first find the derivative of f(t) and then substitute t = 3 into the derivative.

To find the derivative, we can use the quotient rule. Let's denote f'(t) as the derivative of f(t):

f(t) = (7t + 4) / (5t - 1)

f'(t) = [(5t - 1)(7) - (7t + 4)(5)] / (5t - 1)^2

Simplifying the numerator:

f'(t) = (35t - 7 - 35t - 20) / (5t - 1)^2

f'(t) = (-27) / (5t - 1)^2

Now, substitute t = 3 into the derivative:

f'(3) = (-27) / (5(3) - 1)^2

      = (-27) / (15 - 1)^2

      = (-27) / (14)^2

      = (-27) / 196

So, the derivative of f(t) at the point (3, 25/14) is -27/196.The derivative represents the slope of the tangent line to the curve of the function at a specific point.

In this case, the slope of the function f(t) = (7t + 4) / (5t - 1) at t = 3 is -27/196, indicating a negative slope. This suggests that the function is decreasing at that point.

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find the volume of the solid obtained by rotating the region
bounded by y=x and y= sqrt(x) about the line x=2
Find the volume of the solid oblained by rotating the region bounded by \( y=x \) and \( y=\sqrt{x} \) about the line \( x=2 \). Volume =

Answers

The volume of the solid obtained by rotating the region bounded by \[tex](y=x\) and \(y=\sqrt{x}\)[/tex] about the line [tex]\(x=2\) is \(\frac{-2}{3}\pi\) or \(\frac{2}{3}\pi\)[/tex] in absolute value.

To find the volume of the solid obtained by rotating the region bounded by \(y=x\) and \(y=\sqrt{x}\) about the line \(x=2\), we can use the method of cylindrical shells.

The cylindrical shells are formed by taking thin horizontal strips of the region and rotating them around the axis of rotation. The height of each shell is the difference between the \(x\) values of the curves, which is \(x-\sqrt{x}\). The radius of each shell is the distance from the axis of rotation, which is \(2-x\). The thickness of each shell is denoted by \(dx\).

The volume of each cylindrical shell is given by[tex]\(2\pi \cdot (2-x) \cdot (x-\sqrt{x}) \cdot dx\)[/tex].

To find the total volume, we integrate this expression over the interval where the two curves intersect, which is from \(x=0\) to \(x=1\). Therefore, the volume can be calculated as follows:

\[V = \int_{0}^{1} 2\pi \cdot (2-x) \cdot (x-\sqrt{x}) \, dx\]

We can simplify the integrand by expanding it:

\[V = \int_{0}^{1} 2\pi \cdot (2x-x^2-2\sqrt{x}+x\sqrt{x}) \, dx\]

Simplifying further:

\[V = \int_{0}^{1} 2\pi \cdot (x^2+x\sqrt{x}-2x-2\sqrt{x}) \, dx\]

Integrating term by term:

\[V = \pi \cdot \left(\frac{x^3}{3}+\frac{2x^{\frac{3}{2}}}{3}-x^2-2x\sqrt{x}\right) \Bigg|_{0}^{1}\]

Evaluating the definite integral:

\[V = \pi \cdot \left(\frac{1}{3}+\frac{2}{3}-1-2\right)\]

Simplifying:

\[V = \pi \cdot \left(\frac{1}{3}-1\right)\]

\[V = \pi \cdot \left(\frac{-2}{3}\right)\]

Therefore, the volume of the solid obtained by rotating the region bounded by \(y=x\) and \(y=\sqrt{x}\) about the line \(x=2\) is \(\frac{-2}{3}\pi\) or \(\frac{2}{3}\pi\) in absolute value.

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an insurance company sells 40% of its renters policies to home renters and the remaining 60% to apartment renters. among home renters, the time from policy purchase until policy cancellation has an exponential distribution with mean 4 years, and among apartment renters, it has an exponential distribution with mean 2 years. calculate the probability that the policyholder is a home renter, given that a renter still has a policy one year after purchase.

Answers

The probability that the policyholder is a home renter, given that a renter still has a policy one year after purchase, is approximately 0.260 or 26.0%.

Let H denote the event that the policyholder is a home renter, and A denote the event that the policyholder is an apartment renter. We are given that P(H) = 0.4 and P(A) = 0.6.

Let T denote the time from policy purchase until policy cancellation. We are also given that T | H ~ Exp(1/4), and T | A ~ Exp(1/2).

We want to calculate P(H | T > 1), the probability that the policyholder is a home renter, given that a renter still has a policy one year after purchase:

P(H | T > 1) = P(H and T > 1) / P(T > 1)

Using Bayes' theorem and the law of total probability, we have:

P(H | T > 1) = P(T > 1 | H) * P(H) / [P(T > 1 | H) * P(H) + P(T > 1 | A) * P(A)]

To find the probabilities in the numerator and denominator, we use the cumulative distribution function (CDF) of the exponential distribution:

P(T > 1 | H) = e^(-1/4 * 1) = e^(-1/4)

P(T > 1 | A) = e^(-1/2 * 1) = e^(-1/2)

P(T > 1) = P(T > 1 | H) * P(H) + P(T > 1 | A) * P(A)

= e^(-1/4) * 0.4 + e^(-1/2) * 0.6

Putting it all together, we get:

P(H | T > 1) = e^(-1/4) * 0.4 / [e^(-1/4) * 0.4 + e^(-1/2) * 0.6]

≈ 0.260

Therefore, the probability that the policyholder is a home renter, given that a renter still has a policy one year after purchase, is approximately 0.260 or 26.0%.

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Three component work in series. the component fail with probabilities p1=0.09, p2=0.11, and p3=0.28. what is the probability that the system will fail?

Answers

the probability that the system will fail is approximately 0.421096 or 42.11%.

To find the probability that the system will fail, we need to consider the components working in series. In this case, for the system to fail, at least one of the components must fail.

The probability of the system failing is equal to 1 minus the probability of all three components working together. Let's calculate it step by step:

1. Find the probability of all three components working together:

  P(all components working) = (1 - p1) * (1 - p2) * (1 - p3)

                            = (1 - 0.09) * (1 - 0.11) * (1 - 0.28)

                            = 0.91 * 0.89 * 0.72

                            ≈ 0.578904

2. Calculate the probability of the system failing:

  P(system failing) = 1 - P(all components working)

                    = 1 - 0.578904

                    ≈ 0.421096

Therefore, the probability that the system will fail is approximately 0.421096 or 42.11%.

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Given that the study manager wants the QC efforts to be focused on selecting outlier values, whose method is a better way of selecting the sample urgent please help meDeflection of beams: A cantilever beam is 4 m long and has a point load of 5 kN at the free end. The flexural stiffness is 53.3 MNm?. Calculate the slope and deflection at the free end. A competitive firm has a long-run total cost function c(y) = 3y^ 2 + 675 for y > 0 and c(0) = 0. Derive the equation or equations that would describe its long-run supply function. The choice of an inventory costing method has no significant impact on the financial statements. True False derivative rules suppose u and v are differentiable functions at t=0 with u(0)=0, 1, 1, u(0)=0, 7, 1, v(0)=0, 1, 1, and v(0)=1, 1, 2 . evaluate the following expressions. ddt(uv)|t=0 according to some political observers, the different reaction of many black people versus most white people to the shooting of michael brown in ferguson, mo, can be linked to . The ________ of a mitochondrion is/are an adaptation that increases the surface area and enhances a mitochondrion's ability to produce atp find the exact length of the curve. y = 8 1 3 cosh(3x), 0 x 8 We are given the following, mean=355.59, standard deviation=188.54, what is the cost for the 3% highest domestic airfares? Compulsory for the Cauchy-Euler equations. - Problem 8: Determine whether the function f(z)=1/z is analytic for all z or not. Suppose the probability of an IRS audit is 4.8 percent for U.S. taxpayers who file form 1040 and who earned $100,000 or more. When caring of patient with barbiturate toxicity the paramedi thould consider increasing the excretion of this drug by. Select one: a. Make the urine more alkali, so weak acids are more ionized and excretion is increased. b. Make the urine more acidic, so strong acids are less lonized and excretion is increased. c Make the unine more acidic, so weak acids are more lonized and excretion is increased. d. Make the urine more alkali, so strong acids are less ionized and excretion is increased. recall that z(d6) 5 {r0, r180}. what is the order of the element r60z(d6) in the factor group d6/z(d6)? Braze welding is a gas welding technique in which the base metal A. does not usually require controlled heat input. B. liquefies a t a temperature above 1800F. C. does not melt during the welding. D. flows into a joint by capillary attraction What is the term for the virus lifecycle in which the viral genome is integrated into the host DNA?a.Lyticb.lysogenic c.Iyophilicd.infectious e.transmittable According to Alexander Hamilton in Federalist No. 28, how would the Founders vision for a federal republic work?a. States would take turns in leadership roles at the national level.b. The national government would make laws and the state governments would implement those laws.c. States could form coalitions to influence national government.d. People could shift their support between national and state governments as needed to maintain a balance of power. Suppose g is a function which has continuous derivatives, and that g(0)=13,g (0)=6, g (0)=6 and g (0)=18 What is the Taylor polnomial of degree 2 for a, centered at a=0 ? T 2(x)= What is the Taylor polnomial of degree 3 for q, centered at a=0 ? T 3(x)= Use T 2(x) to approximate g(0.2) Use T 3(x) to approximate g(0.2) to compare objects of custom class types, a programmer can _____. building a product to order from components and delivering to the customer is an example of what manufacturing process? Autotrophs include plants which use 0.1% of energy from the sun (true of false?)