If A= B and AB= 3x-5 BC= 5x-6 and AC = 2x-9 find the value of X

The sample sizes for the two universities need to be identical in order for their sampling distributions to have about the same standard deviation.

A sampling distribution is a probability distribution that specifies how a statistic—like the mean or standard deviation—behaves when it is generated from population-based samples of a specific size. It is crucial to statistical inference because it makes it easier to calculate the likelihood of receiving specific sample statistics from a population and to draw conclusions about the characteristics of the population from the sample data. The population factors and sample size both have an impact on the form, centre, and spread of a sampling distribution.

The size of the sample for the sampling distributions is given as:

n1 = (s1 / s2) * n2

where n1 and n2 are the sample sizes for College A and College B respectively.

We may assume that the variances of the two populations are identical as we want the sampling distributions to have about the same standard deviation. As a result, we may make the formula as follows by setting s1 = s2:

n1 = n2

We may draw the conclusion that the sample sizes for the two universities need to be identical in order for their sampling distributions to have about the same standard deviation.

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The value οf the expressiοn is 343.

An expressiοn in math is a sentence with a minimum οf twο numbers οr variables and at least οne math οperatiοn. This math οperatiοn can be additiοn, subtractiοn, multiplicatiοn, οr divisiοn.

An expressiοn cοnsists οf οne οr mοre numbers οr variables alοng with οne mοre οperatiοn.

The expression [tex](7^{12} * 7^9) / 7^{18[/tex] can be simplified as follows:

First, using the rule that states [tex]a^m / a^n =a^{m+n}[/tex], we can combine the two terms in the numerator to get:

[tex]7^{12} * 7^9 = 7^{(12+9) } = 7^{21}[/tex]

So the expression now becomes:

[tex]7^{21} / 7^{18}[/tex]

Next, using the rule that states [tex]a^m / a^n =a^{m-n}[/tex], we can divide the two terms in the denominator from the numerator to get:

[tex]7^{21} /7^{18} = 7^{21-18}= 7^3[/tex]

Therefore, the value of the expression is 343.

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Mean is the average. Add the minutes together and divide by 10.

[tex]80 \div10 = 8[/tex]

The answer is C

Answer:

58 degrees

Step-by-step explanation:

find x first

8x+2 + 6x + 80 = 180
14x + 82 = 180
14x = 98

x = 7

then substitute it back into the angle measure of B

angle b = 8x + 2
8(7) + 2 = 58

The two points on the line to graph the function is (3, 4/3) and (-6, 10/3).

A line is a one-dimensional, straight shape that can go on forever in both directions. It is made up of an infinite number of points that are organized in a straight line.

We are unable to offer two points on the line for graphing in the absence of a line or function.

We consider the function is, [tex]f(x) = 2 - \frac{2}{9} x[/tex]

To graph the function [tex]f(x) = 2 - \frac{2}{9} x[/tex] , we can choose any two values of x, plug them into the equation to find the corresponding values of y, and then plot the points (x, y) on the coordinate plane. Here are two possible sets of points we can use:

Set 1:

Let x = 0:

f(0) = 2 - (2/9)(0) = 2

Therefore, one point on the line is (0, 2).

Let x = 9:

f(9) = 2 - (2/9)(9) = 0

and another point on the line is (9, 0).

Now, we can plot these two points on the coordinate plane and draw a straight line passing through them to graph the function [tex]f(x) = 2 - \frac{2}{9} x[/tex]

Set 2:

Let x = 3:

f(3) = 2 - (2/9)(3) = 2 - (2/3) = 4/3

So one point on the line is (3, 4/3).

Let x = -6:

f(-6) = 2 - (2/9)(-6) = 2 + (4/3) = 10/3

So another point on the line is (-6, 10/3).

Now, we can plot these two points on the coordinate plane and draw a straight line passing through them to graph the function [tex]f(x) = 2 - \frac{2}{9} x[/tex]

Therefore, the two points on the line to graph the function is (3, 4/3) and (-6, 10/3).

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Answer:

The total surface area of the triangular prism is 556 square units.

Step-by-step explanation:

The given 3D figure is a triangular prism.

The formula to find the total surface area of a triangular prism is:

[tex]\boxed{\textsf{Total Surface Area}= \sf 2 A_B+(a+b+c)h}[/tex]

where:

Therefore, the surface area of a triangular prism is the sum of the area of two congruent triangular bases and three rectangles.

The area of a triangle can be calculated by halving the product of the length of its base and height.  

The base of the triangles is 17 units and the height is 8 units.

Therefore, the area of each triangular base is:

[tex]\begin{aligned}\implies \sf Area\;of\;triangular\;base\;(A_B)&=\sf\dfrac{1}{2} \cdot17 \cdot8\\&=\sf 68\;square\;units\end{aligned}[/tex]

Therefore, the values to substitute into the total surface area formula are:

[tex]\begin{aligned}\implies \textsf{Total Surface Area}&= \sf 2 A_B+(a+b+c)h\\&= \sf 2 (68)+(11+14+17)10\\&=\sf 2 \left(68\right)+(42)10\\&=\sf 136+420\\&=\sf 556 \; square\;units\end{aligned}[/tex]

Therefore, the total surface area of the given triangular prism is 556 square units.

the answer is in the photo

Function is continuous across its domain is B.

The domain of a function is the set of numbers that can go into a given function. In other words, it is the set of x-values that you can put into any given equation. The set of possible y-values is called the range. If you want to know how to find the domain of a function in a variety of situations,

If a real function f is given by a formula, it may be not defined for some values of the variable. In this case, it is a partial function, and the set of real numbers on which the formula can be evaluated to a real number is called the natural domain or domain of definition of [tex]f[/tex].

The function f(x) = 0.52 is a constant function, and constant functions are always continuous across their domain.

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Answer:

x = 3

Step-by-step explanation:

We know that the mass of 5x's and 2 is the same as 17, so we can represent this in the equation:

5x + 2 = 17

To solve for x, we need to isolate x and move everything else to the other side, so:

5x = 17 - 2

When 2 moves to the right side, the operation is the opposite (so the + turns into a - )

So we know that:

5x = 15

5 multiplied by x is 15, so, to move 5 to the other side, we need to divide:

x = 15/5

So:

x = 3

We can identify the data values with a frequency of 2 on the line plot, which are 3/16, 5/8, and 1/2.

A line plot is a visual representation of data that shows the frequency of values in a dataset. In the given line plot, we need to identify the data values that have a frequency of 2.

Firstly, we have a data value of 3/16 that has a frequency of 2. This means that the value 3/16 appears twice in the dataset.

Next, we have a data value of 5/8 that also has a frequency of 2. This means that the value 5/8 appears twice in the dataset.

Lastly, we have a data value of 1/2 that has a frequency of 2. This means that the value 1/2 appears twice in the dataset.

Therefore, the data values that have a frequency of 2 on the given line plot are 3/16, 5/8, and 1/2.

In addition to these, we have some other data values on the line plot. The data value of 4 appears only once, and the data values of 12 and 78 are not present on the line plot. Hence, we cannot determine their frequency from the given information.

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The graph that shows the line y = - 3 x + 1 would be B. Graph B.

To find the graph, you need to find the x and y values from the given equation of line y=-3x+1.

Then look at the graph that has these points.

For x = -2:

y = -3(-2) + 1

y = 6 + 1

y = 7

For x = -1:

y = -3(-1) + 1

y = 3 + 1

y = 4

For x = 0:

y = -3(0) + 1

y = 0 + 1

y = 1

For x = 1:

y = -3(1) + 1

y = -3 + 1

y = -2

For x = 2:

y = -3(2) + 1

y = -6 + 1

y = -5

For x = 3:

y = -3(3) + 1

y = -9 + 1

y = -8

So, the y values for x = -3 to x = 3 are:

x = -3: y = 10

x = -2: y = 7

x = -1: y = 4

x = 0: y = 1

x = 1: y = -2

x = 2: y = -5

x = 3: y = -8

The graph that has these points is therefore Graph B.

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In response to the query, we can state that therefore, the three angle statements that are always true regarding the diagram are: m∠5 + m∠3 = m∠4 and m∠3 + m∠4 + m∠5 = 180° and m∠5 + m∠6 =180°

An angle is a shape in Euclidean geometry made composed of two rays, referred to as the angle's sides, that come together at a centre point known as the angle's vertex. An angle that is in the plane where the rays are placed can be produced by two rays. Another angle is produced when two planes collide. Dihedral angles are the name given to them. In planar geometry, an angle is the form made by two rays or lines that share a termination. The English word "angle" derives from the Latin word "angulus," which means "horn." The vertex, also known as the angle's sides, is where the two rays' common terminals meet.

To answer this question, we can use the following facts about the angles in a triangle:

The sum of the interior angles of a triangle is always 180 degrees.

An exterior angle of a triangle is equal to the sum of the two opposite interior angles.

Using these facts, we can analyze the diagram and make the following conclusions:

m∠5 + m∠3 = m∠4 is always true because angle 4 is the exterior angle at angle 3, so m∠4 = m∠3 + m∠5.

m∠3 + m∠4 + m∠5 = 180° is always true because the sum of the three exterior angles of a triangle is always 360 degrees (i.e., one full rotation), so m∠3 + m∠4 + m∠5 = 360°. Also, we know that m∠3 + m∠5 = m∠4, so substituting this gives m∠4 + m∠4 = 360°, which simplifies to 2m∠4 = 360°, or m∠4 = 180° - m∠3 - m∠5. Substituting this into the original equation gives m∠3 + m∠4 + m∠5 = 180°.

m∠5 + m∠6 =180° is always true because angle 6 is the exterior angle at angle 5, so m∠6 = m∠5 + m∠3. Substituting this into the equation gives m∠5 + m∠5 + m∠3 = 180°, which simplifies to m∠5 + m∠6 = 180°.

Therefore, the three statements that are always true regarding the diagram are:

m∠5 + m∠3 = m∠4

m∠3 + m∠4 + m∠5 = 180°

m∠5 + m∠6 =180°

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The given expression is divisible by 6 without calculating

A number can be divided if it divides evenly (leaving no remainder) into another integer. For instance, 2 divides 34 equally, making 34 divisible by 2. 34 is not divided by 3, though, because doing so would leave us with a remainder.

We can prove that [tex]$5^7 + 5^6$[/tex] is divisible by 6 using modular arithmetic.

First, we can rewrite the expression as [tex]$5^6(5+1)$[/tex], which simplifies to [tex]$5^6 \cdot 6$[/tex].

Since 5 is not divisible by 2, we can use the fact that [tex]$a \equiv b \pmod{m}$[/tex] implies [tex]$ac \equiv bc \pmod{m}$[/tex] for any integer c to simplify our expression to [tex]$(-1)^6 \cdot 6$[/tex], or simply [tex]6 (since $5 \equiv -1 \pmod{6}$)[/tex].

Therefore, [tex]$5^7 + 5^6$[/tex] is divisible by 6.

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Answer:

Step-by-step explanation:

Let's start by defining some variables to represent the amount invested in the CD and the mutual fund. Let:

C = amount invested in the CD

M = amount invested in the mutual fund

From the problem statement, we know that:

C + M = 60,000 (the total investment amount is $60,000)

C >= 2M (twice as much should be invested in CDs as in the mutual fund)

M >= 8,000 (the mutual fund requires a minimum investment of $8,000)

We can use these constraints to write the objective function that we want to maximize, which is the total return on investment:

R = 0.08C + 0.07M

To solve this problem, we can use the following steps:

Substitute C = 2M into the first equation to get:

3M = 60,000

M = 20,000

Since M >= 8,000, we can invest the minimum required amount in the mutual fund and put the rest in the CD:

M = 8,000

C = 60,000 - M = 52,000

Calculate the total return on investment:

R = 0.08C + 0.07M = 0.08(52,000) + 0.07(8,000) = 4,960 + 560 = 5,520

Therefore, the investor should invest $52,000 in the CD and $8,000 in the mutual fund to maximize the return, and the maximum return is $5,520.

1/2cm in the scale drawing represents one foot on the actual building.

What is the scale factor?

The ratio of the scale of an original thing to a new object that is a representation of it but of a different size is known as a scale factor (bigger or smaller). When both the original dimensions and the new dimensions are known, the scale factor may be determined. The following is a basic formula to determine a figure's scale factor: Scale factor is equal to the difference between the dimensions of the old and new shapes.

Here, we have

Given: The scale drawing of a building has a height of 10 centimeters. The actual building is 20 feet high.

we have to find how many centimeters in the scale drawing represent one foot on the actual building.

The answer will be 1/2 because 1 centimeter is equal to 2 feet in reality. But since we want to know the answer of how many centimeters is in 1 foot, we will divide that in half, to get an answer of 1/2 centimeter.

Hence, 1/2cm in the scale drawing represents one foot on the actual building.

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To find the value of t at which the instantaneous velocity of the particle is equal to its average velocity over the interval (0,8), we need to first determine the instantaneous velocity and the average velocity.

The instantaneous velocity of the particle is the derivative of the distance function with respect to time, given by:

v(t) = dx/dt = 2/3 * t^(-1/3)

The average velocity of the particle over the interval (0,8) is the total distance traveled divided by the total time elapsed:

average velocity = (distance traveled) / (time elapsed)

= x(8) / 8

We can find x(8) by plugging t = 8 into the distance function:

x(8) = (8^(2/3)) = 4

Therefore, the average velocity over the interval (0,8) is 4/8 = 1/2.

Now, we need to find the value of t for which the instantaneous velocity is equal to 1/2. Setting v(t) equal to 1/2 and solving for t, we get:

2/3 * t^(-1/3) = 1/2

t^(-1/3) = 3/4

Taking the cube of both sides, we get:

t = (4/3)^3 = 64/27

Therefore, the instantaneous velocity of the particle is equal to its average velocity over the interval (0,8) when t = 64/27.

Answer: 4k

Step-by-step explanation:

Reflection across the y-axis is the transformation used to the polygon ABCD.

A polygon is closed geometric shape that is made up of straight line segments connected end to end. It is  two-dimensional shape that has three or more sides, angles, and vertices.

In a polygon, sides do not cross each other and  vertices are points where two sides meet.

1)  The type of transformation shown in the image is a Horizontal translation, because the second polygon A'B'C'D' is moved horizontally to the right of the original polygon ABCD while maintaining its size and shape.

2) 90° clockwise rotation

3)  90° counterclockwise rotation.

4)  Reflection across the x-axis.

5)  Reflection across the y-axis.

6)  Reflection across the y-axis

7)  the correct answer is 180° clockwise rotation.

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Complete question -

Answer:

The value of t that satisfies the equation and makes triangle ABC an isosceles triangle is 9 cm.

Step-by-step explanation:

Since triangle ABC is an isosceles triangle, we know that the lengths of AB and AC are equal. Using the lengths given in the diagram, we can set up an equation:

AB = AC

4t - 7 = 2t + 11

Now we can solve for t:

4t - 7 = 2t + 11

2t = 18

t = 9

Therefore, the value of t that satisfies the equation and makes triangle ABC an isosceles triangle is 9 cm.

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The value of y is 5 when x = -31/3.

The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions.

There are three major forms of linear equations: point-slope form, standard form, and slope-intercept form.

Thus, from the given question, we can see that:

The value of y is -3 when x = -17/5.

The value of y is 0 when x = 1/2.

The equation that represents this relationship is y = (2x - 1) / (x + 6).

However, the value of y cannot be 2 for any value of x that satisfies this equation.

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Answer:

Step-by-step explanation:

a. We can start by substituting y = 2x into the second equation to get an equation in terms of x only:

8x + 16y - 128 = 8x + 16(2x) - 128 = 0

Simplifying this equation, we get:

24x = 128

Solving for x, we get:

x = 128/24 = 32/6 = 16/3

So you and your friend work 16/3 hours (or approximately 5.33 hours) each at the second job.

b. If both of you work the same number of hours at the second job, then we can set x = y in the first equation and solve for y:

4x + 8y = 64

4x + 8x = 64

12x = 64

x = 64/12 = 16/3

So both you and your friend work 16/3 hours (or approximately 5.33 hours) at the second job.

To compare the number of hours worked at the first job, we can substitute x = 16/3 into the first equation to find:

4(16/3) + 8y = 64

64/3 + 8y = 64

8y = 64 - 64/3 = 128/3

y = 16/3

So your friend works 16/3 hours (or approximately 5.33 hours) at the first job, which is twice the amount of time you work at the first job.

Answer: -4/5

Step-by-step explanation: To find the coefficient of y in the equation 3y² - ⅘y + 6 = 0, we need to identify the term in the equation that contains y and then extract the coefficient.

In this equation, the term that contains y is -⅘y. The coefficient of y is the number that is multiplied by y in this term, which is -⅘.

Therefore, the coefficient of y in the equation 3y² - ⅘y + 6 = 0 is -⅘.

the length of blue rectangle 2 to the width of green rectangle 6 is: 2/6 = 0.33 (rounded to two decimal places)

How to find the length of blue rectangle?

To find the length of blue rectangle 2 in relation to the length of green rectangle 4, we need to divide the length of blue rectangle 2 by the length of green rectangle 4.

So, the length of blue rectangle 2 to the length of green rectangle 4 is:

2/4 = 0.5

To find the length of blue rectangle 2 in relation to the width of green rectangle 6, we need to divide the length of blue rectangle 2 by the width of green rectangle 6.

So, the length of blue rectangle 2 to the width of green rectangle 6 is:

2/6 = 0.33 (rounded to two decimal places)

Note that the ratio of the length of blue rectangle 2 to the length of green rectangle 4 is different from the ratio of the length of blue rectangle 2 to the width of green rectangle 6.

A rectangle is a two-dimensional shape that has four sides and four right angles. It is a type of quadrilateral, which means a four-sided polygon.

In a rectangle, the opposite sides are parallel and have equal length. This makes it different from a square, which is also a rectangle but has four equal sides.

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..

I will solve this equation! Just provide the x value.

Explanation:

There are 6 flavors given. This is the number of choices you have to pick from. After you choose a flavor, the next person has 6-1 = 5 choices. Then there are 5-1 = 4 choices after that. We have this countdown.

Multiply the values mentioned: 6*5*4 = 30*4 = 120

An alternative is to use the nPr permutation formula with n = 6 and r = 3.

The nPr formula is [tex]_nP_r = \frac{n!}{(n-r)!}[/tex] where the exclamation marks mean factorials.

Answer:

Each person would get 1/8 of the pizza if they were to share it equally.

Step-by-step explanation:

A. The inverse of the function f(x) = 3 / (7x + 1) is g(x) = (3 - x)/7x

B. The inverse function is verified, such that f(g(x)) = x

The inverse of the function is solved as follows

f(x) = 3 / (7x + 1)

let f(x) = y, so that y = 3 / (7x + 1)

writing the equation by isolating x

y (7x + 1) = 3

7x + 1 = 3/y

7x = 3/y - 1

7x = (3 - y)/y

x = (3 - y)/7y

interchanging the variables

y = (3 - x)/7x

hence g(x) = (3 - x)/7x

solving for f(g(x)), to verify

f(g(x)) = 3 / (7((3 - x)/7x) + 1)

f(g(x)) = 3 / ((3 - x)/x) + 1)

f(g(x)) = 3 / ((3 - x + x)/x)

f(g(x)) = 3 / 3/x

f(g(x)) = (3 / 3) * x

f(g(x)) = x

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Answer:

  63.0°

Step-by-step explanation:

You want the measure of an angle in a right triangle with hypotenuse 11 and adjacent side 5.

The cosine relation is ...

  Cos = Adjacent/Hypotenuse

  cos(x) = 5/11

Then the angle is found using the inverse cosine function:

  x = arccos(5/11) ≈ 63.0°

The value of x is about 63.0°.

__

Additional comment

The calculator's angle mode needs to be set to "degrees."

Answer:

The pilot was scheduled to depart at 4:00 p.m.

Her departure has been delayed by 16 minutes.

Air traffic control approved a new flight plan that will allow her to arrive four times faster than she calculated in her original flight plan.

We want to create an equation that can be used to predict the number of minutes after 4:00 p.m. she will arrive at her destination.

First, let's represent the time of her original flight as x, in minutes. This means that her original flight plan would have taken x minutes to arrive at her destination.

However, with the new flight plan approved by air traffic control, she will arrive four times faster than she calculated in her original flight plan. This means that her new flight plan will take x/4 minutes to arrive at her destination.

Now, we need to take into account the 16-minute delay in her departure. This means that she will depart at 4:16 p.m. instead of 4:00 p.m., and therefore arrive at her destination x/4 minutes after 4:16 p.m.

So the equation that can be used to predict the number of minutes after 4:00 p.m. she will arrive at her destination is:

Number of minutes after 4:00 p.m. = 16 + x/4

Note that this equation assumes that her flight time is the only factor affecting her arrival time, and does not take into account any other delays or factors that may affect her flight.

Step-by-step explanation:

4/13 is the probability of drawing a club out of the deck of card if a card at random is selected from a 52-card deck.

There are 13 clubs and 4 jacks in a standard 52-card deck. However, we need to be careful not to double-count the jack of clubs, which is both a club and a jack.

So the number of cards that are either a club or a jack (excluding the jack of clubs) is:

13 (clubs) + 4 (jacks) - 1 (jack of clubs) = 16

Therefore, the probability of drawing a club or a jack (excluding the jack of clubs) is:

P(club or jack) = number of favorable outcomes / total number of outcomes

= 16 / 52

= 4 / 13

So the probability of drawing a club or a jack is 4/13.

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