Answer:
4.9 in
Step-by-step explanation:
6/11 = x/9
6/11 times 9 = x
x = 4.9
PLEASE HELP. The value of "y" varies directly with "x".
If y 6, then x = 2.
Find "y" if x = 5.
k = 3
y = [?]
Answer:
y=15
Step-by-step explanation:
y varies directly as x so:
y=k(x)
y = kx
if y is 6 and x is 2;
input the values
y=kx
6=k(2)
[tex] \frac{6}{2} = \frac{2k}{2} [/tex]
k = 3
then find y if x=5
use the previous formula
y=kx so:
y=3(5)
therefore y=15
The uniform thin rod in the figure below has mass M 5.00 kg and length L = 2.17 m and is free to rotate on a frictionless pin. At the instant the rod is released from rest in the horizontal position, find the magnitude of the rod's angular acceleration, the tangential acceleration of the rod's center of mass, and the tangential acceleration of the rod's free end. (a) the rod's angular acceleration (in rad/s2) rad/s2 (b) the tangential acceleration of the rod's center of mass (in m/s2) m/s2 (c) the tangential acceleration of the rod's free end (in m/s2) m/s2
(a) The magnitude of the rod's angular acceleration is (3g/2L) rad/s^2.
(b) The tangential acceleration of the rod's center of mass is (3g/4) m/s^2.
(c) The tangential acceleration of the rod's free end is (3g/2) m/s^2.
(a) To find the magnitude of the rod's angular acceleration, we can use the formula for rotational motion. The torque acting on the rod is due to the gravitational force acting at its center of mass.
The torque is given by τ = Iα, where τ is the torque, I is the moment of inertia, and α is the angular acceleration.
For a thin rod rotating about one end, the moment of inertia is (1/3)ML^2, where M is the mass of the rod and L is its length.
The torque is equal to the product of the gravitational force and the perpendicular distance from the pivot to the center of mass, which is (1/2)L.
So we have τ = (1/2)MgL, where g is the acceleration due to gravity. Substituting these values into the torque equation, we get (1/2)MgL = (1/3)ML^2 α.
Simplifying the equation, we find α = (3g/2L).
Therefore, the magnitude of the rod's angular acceleration is (3g/2L) rad/s^2.
(b) The tangential acceleration of the rod's center of mass can be found using the formula a = αr, where a is the tangential acceleration, α is the angular acceleration, and r is the distance from the center of mass to the pivot point.
In this case, the distance r is (1/2)L, so substituting the values, we get a = (3g/2L)(1/2)L = (3g/4) m/s^2.
Therefore, the tangential acceleration of the rod's center of mass is (3g/4) m/s^2.
(c) The tangential acceleration of the rod's free end is equal to the sum of the tangential acceleration of the center of mass and the product of the angular acceleration and the distance from the center of mass to the free end.
Since the distance from the center of mass to the free end is (1/2)L, the tangential acceleration of the free end is
a + α(1/2)L = (3g/4) + (3g/2L)(1/2)L = (3g/4) + (3g/4) = (3g/2) m/s^2.
Therefore, the tangential acceleration of the rod's free end is (3g/2) m/s^2.
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what is the range of the inverse of the given function?
f(x)=√x-2
(infinity, 2]
(2, infinity]
[-2, infinity)
[2, infinity)
The range of the inverse of the function is [2, ∝)
What is the range of the inverse of the function?From the question, we have the following parameters that can be used in our computation:
f(x) = √x - 2
Set the radicand greater tahn or equal to 0
So, we have
x - 2 ≥ 0
When evaluated, we have
x ≥ 2
This means that
[2, ∝)
Hence, the range of the inverse of the function is [2, ∝)
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(7x-9)-(8x-5)
Find an expression which represents the difference when 8x-5 is subtracted from 7x-9
The coefficient of x is -1, indicating that there is one fewer x term compared to the original expression. The constant term is -4, which is the result of subtracting 5 from -9.
To find the difference when subtracting 8x - 5 from 7x - 9, we can use the distributive property to distribute the negative sign to each term in 8x - 5:
(7x - 9) - (8x - 5) = 7x - 9 - 8x + 5
Next, we can combine like terms by adding or subtracting the coefficients of the same variables:
7x - 9 - 8x + 5 = (7x - 8x) + (-9 + 5) = -x - 4
Therefore, the expression that represents the difference when 8x - 5 is subtracted from 7x - 9 is -x - 4.
In this expression, the coefficient of x is -1, indicating that there is one fewer x term compared to the original expression. The constant term is -4, which is the result of subtracting 5 from -9.
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1. Obtener el área del siguiente rectángulo.
13
2
74
The area of the given rectangle is determined by multiplying its length of 13 units by its width of 2 units, resulting in an area of 26 square units.
To find the area of the rectangle, we need to multiply its length by its width. The length of the rectangle is given as 13 units and the width is given as 2 units.
The formula to calculate the area of a rectangle is: Area = Length × Width.
Using the given measurements, we substitute the values into the formula:
Area = 13 × 2 = 26 square units.
Therefore, the area of the given rectangle is 26 square units.
To provide a more detailed explanation, the area of a rectangle represents the total amount of space enclosed by its four sides. In this case, the rectangle has a length of 13 units and a width of 2 units. When we multiply the length by the width, we are essentially finding the product of the two dimensions, which gives us the total area.
The resulting area of 26 square units implies that within the boundaries of the rectangle, there are 26 square units of space. It is important to note that the unit of measurement used for the length and width should be consistent to ensure the accuracy of the area calculation.
In summary, the area of the given rectangle is determined by multiplying its length of 13 units by its width of 2 units, resulting in an area of 26 square units.
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Ram borrowed Rs. 250000 from sit a at the rate of 21%: per annum. At the end of monts, how much should he pay compounde à half yearly ?
The end of 6 months, Ram should pay Rs. 276250 compounded half-yearly.
Ram borrowed Rs. 250000 from Sit at an interest rate of 21% per annum. To calculate the compound interest, we need to know the compounding period. In this case, the interest is compounded half-yearly, which means it is calculated twice a year.
To find out how much Ram should pay at the end of 6 months, we can use the compound interest formula:
A = P(1 + r/n)^(nt)
Where:
A = the amount to be paid at the end of the time period
P = the principal amount (the initial amount borrowed) = Rs. 250000
r = the interest rate per period (in decimal form) = 21% = 0.21
n = the number of compounding periods per year = 2 (since it's compounded half-yearly)
t = the number of years = 6 months = 6/12 = 0.5 years
Plugging in these values into the formula, we get:
A = 250000(1 + 0.21/2)^(2*0.5)
Simplifying the equation:
A = 250000(1 + 0.105)^(1)
A = 250000(1.105)
A = Rs. 276250
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Which describes the transformations applied in the figure above?
A. a counterclockwise rotation of 180 degrees and move 5 units to the left
B. 7 units right and a clockwise rotation of 90 degrees
C. 7 units left and a reflection about the x-axis
D. 7 units left and 2 units up
The statement that describes the transformations applied in the figure above include the following: C. 7 units left and a reflection about the x-axis.
How to reflect the quadrilateral based on the transformation rule?In Mathematics and Geometry, a reflection over or across the x-axis is represented by this transformation rule (x, y) → (x, -y).
Based on the graph, the coordinates of point A are located at (-6, 1) in quadrant II.
By applying a translation to the A horizontally right by 7 units, the new coordinate A1 of quadrilateral ABCD include the following:
(x, y) → (x + 7, y)
A (-6, 1) → (-6 + 7, 1) = A1 (1, 1)
By applying a reflection over the x-axis to the coordinates of point A1, we have the following coordinates of the image A';
(x, y) → (x, -y)
Point A1 (1, 1) → A' (1, -(1)) = G' (1, -1)
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3) ABCD is a rectangle.
The line that contains BA is y=-x+3. Write the
equations of the lines that contain BC, AD, and CD
The equations of the other line are:
BC: y = 2x
AD: y = 2x + 2
CD = -¹/₂x + 5.5
How to find the equation of the Line?The formula for the equation of a line between two coordinates is expressed as:
(y - y₁)/(x - x₁) = (y₂ - y₁)/(x₂ - x₁)
Thus, for the lines we have:
BC has B(-2, 4) and C(-1, 6)
Thus:
BC: (y - 4)/(x - 2) = (6 - 4)/(-1 + 2)
BC: (y - 4)/(x - 2) =2
BC: y - 4 = 2x - 4
BC: y = 2x
AD has A(2,2) and D(3, 4)
Thus:
AD: (y - 2)/(x - 2) = (4 - 2)/(3 - 2)
AD: y - 2 = 2x - 4
AD: y = 2x + 2
CD has C(-1, 6) and D(3, 4)
CD: (y - 6)/(x + 1) = (4 - 6)/4
CD: y - 6 = -¹/₂(x + 1)
CD = -¹/₂x + 5.5
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Kemani Walker
Law of Sines
Jun 15, 9:29:00 PM
?
In ATUV, t = 820 inches, m/U=132° and m2V=25°. Find the length of u, to the
nearest inch.
Answer: u =
Submit Answer
The length of u, to the nearest inch, is 1818 inches.
To solve this problem, we can use the Law of Sines, which states that the ratio of the length of a side of a triangle to the sine of its opposite angle is constant.
In this case, we'll use the following formula:
a/sin(A) = b/sin(B) = c/sin(C)
Let's label the sides and angles of the triangle:
Side a = u (length of u)
Side b = t (820 inches)
Side c = v (length of v)
Angle A = m/U (132°)
Angle B = m2V (25°)
Angle C = 180° - A - B (as the sum of angles in a triangle is 180°)
Now, we can use the Law of Sines to set up the equation:
u/sin(A) = t/sin(B)
Plugging in the given values:
u/sin(132°) = 820/sin(25°)
To find the length of u, we'll solve this equation for u.
u = (820 [tex]\times[/tex] sin(132°)) / sin(25°)
Using a calculator, we can evaluate the right side of the equation to get the approximate value of u:
u ≈ (820 [tex]\times[/tex] 0.9397) / 0.4226
u ≈ 1817.54 inches
Rounding to the nearest inch, we have:
u ≈ 1818 inches
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Dora's bowling score this week where 152 170 and 161
question below what is Dora mean score
The mean score of Dora's bowling for this week would be = 161.
How to calculate the mean score for the week?To calculate the mean score for the week the following would be carried out as follows;
The formula that is used to calculate mean = summation of the score/ number of scores recorded.
That is;
The weeks scores = 152+170+161
= 483/3
= 161
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Jabez was solving the math problem 54 x 0.06. Before solving, he estimates that his answer will be less than 54 but greater than 5.4. His classmate, Christina, disagrees and thinks the answer will be less than 5.4. Who is correct, Jabez or Christina? Explain how you know who is correct without calculating the product of 54 x 0.06.
Jabez is correct without calculating the product of 54 x 0.06 correctly because his estimation aligns with the mathematical principle that multiplying a number by a decimal less than 1 will result in a smaller product.
To determine who is correct without calculating the product of 54 x 0.06, we can use estimation.
Jabez estimated that the answer will be less than 54 but greater than 5.4. Let's analyze his estimation. When multiplying a number by a decimal less than 1, the product will always be smaller than the original number. In this case, 54 is the original number. Since 0.06 is less than 1, the product of 54 x 0.06 will definitely be smaller than 54.
On the other hand, Christina thinks the answer will be less than 5.4. Let's analyze her estimation. The original number, 54, is already greater than 5.4. When multiplying it by a decimal less than 1, the product will be even smaller. Therefore, Jabez's estimation is incorrect.
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How to represent 7/3 as a decimal
Fraction 7/3 is convertible to a decimal. It is a proper fraction. Because here the numerator is lesser than the denominator. Any fraction can be represented as a decimal number.
To transform the fraction into a decimal, it has to go through a process of division. It will be like this, 7÷3.
During the process of the division after the use of the decimal point, the same number will keep repeating. The number that keeps repeating is known as the recurring number.
If 7 is divided by 3, the result is 2.333333. Here the digit 3 is recurring. So the representation of 7/3 as a decimal is 2.333333.
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Use traces to sketch the surface. (If an answer does not exist, enter DNE. Select Update Graph to see your response plotted on the screen. Select the Submit button to grade your response.)
9x2 − y2 + 3z2 = 0
(Write an equation for the cross section at
z = 0
using x and y.)
(Write an equation for the cross section at
y = −9
using x and z.)
(Write an equation for the cross section at
y = 9
using x and z.)
(Write an equation for the cross section at
x = 0
using y and z.)
Answer:
Step-by-step explanation:
To sketch the surface represented by the equation 9x² - y² + 3z² = 0 and find the equations for the cross sections, we can start by isolating each variable and considering different values for the fixed variables.
(1) - Cross section at z = 0:
Substituting z = 0 into the equation, we get 9x² - y² = 0 . Rearranging this equation, we have:
9x² = y²
Taking the square root of both sides, we get:
y = ±3x
So the equation for the cross section at z = 0 is y = ±3x and our trace is a line in the xy-plane.
(2) - Cross section at y = -9:
Substituting y = -9 into the equation, we get 9x² - (-9)² + 3z² = 0. Simplifying this equation, we have:
9x² - 81 + 3z² = 0
Rearranging, we obtain:
9x² + 3z² = 81
Dividing by 3, we get:
3x² + z² = 27
So the equation for the cross section at y = -9 is 3x² + z² = 27 and our trace is an ellipse in the xz-plane.
(3) - Cross section at y = 9:
Substituting y = 9 into the equation, we get 9x² - (9)² + 3z² = 0. Simplifying this equation, we have:
9x² - 81 + 3z² = 0
Rearranging, we obtain:
9x² + 3z² = 81
Dividing by 3, we get:
3x² + z² = 27
So the equation for the cross section at y = -9 is 3x² + z² = 27 and our trace is an ellipse in the xz-plane.
(4) - Cross section at x = 0:
Substituting x = 0 into the equation, we get - y² + 3z² = 0. Rearranging this equation, we have:
y² = 3z²
Taking the square root of both sides, we get:
y = ±√3z
So the equation for the cross section at x = 0 is y = ±√3z and our trace is a parabola in the yz-plane.
Select an expression that is equivalent to V(6x²). (6x5)
A. 32/6x7/5
B. 32/37/3
C. 62/37/3
D. 62/6x7/5
The expression that is equivalent to x√6 is option C, 62/37/3.The correct choice is C. 62/37/3.
To find an expression that is equivalent to √(6x²), we need to simplify the square root.
Using the properties of square roots, we know that the square root of a product is equal to the product of the square roots. Therefore, we can simplify the expression as follows:
√(6x²) = √6 * √(x²)
The square root of x² is simply x, and the square root of 6 cannot be simplified further. Therefore, the expression can be simplified as:
√(6x²) = x√6
Among the given options, the expression that is equivalent to x√6 is option C, 62/37/3.
Therefore, the correct choice is C. 62/37/3.
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Bookwork code: G15
There are two bags of marbles. The first contains
one blue, one yellow and two red marbles. The
second contains one red, one blue and two yellow
marbles. A random marble from each bag is
removed. What is the probability of removing a
blue and a yellow? Give your answer as a fraction
in its simplest form.
Bag 1
Bag 2
R
BYY
BB, RB, BB,Y B,Y
Y Y,RY,BY,YY,Y
RR,RR, BR,Y R,Y
RR,RR, BR,Y R,Y
Answer: 5/ 16
explanation: total= 4x4=16
red and yellow : (r,y) or (y,r)
n= 5
p= 5 1/1 16
p = 5 over 16
find the value of x and the mesasurement of angle axc
Answer:
x = 4 , ∠ AXC = 150°
Step-by-step explanation:
∠ 1 and ∠ 2 form the angle AXC , that is
∠ AXC = ∠ 1 + ∠ 2 , then
6(6x + 1) = 102 + 10x + 8
36x + 6 = 10x + 110 ( subtract 10x from both sides )
26x + 6 = 110 ( subtract 6 from both sides )
26x = 104 ( divide both sides by 26 )
x = 4
Then by substituting x = 4
∠ AXC = 6(6x + 1) = 36x + 6 = 36(4) + 6 = 144 + 6 = 150°
what is da rate to question
The calculated value of the rate of the graph is 0.8
How to determine the rate of the graphfrom the question, we have the following parameters that can be used in our computation:
The graph
Where, we have
(0, -16) and (20, 0)
The rate of the graph is calculated as
Rate = Change in y/x
using the above as a guide, we have the following:
Rate = (0 + 16)/(20 - 0)
Evaluate
Rate = 0.8
Hence, the rate is 0.8
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Please show the graph with correct points in x and y. Please specify if it’s a hollow dot or solid dot for each point. I’ll give good rating! Thank you!
The solution to the piecewise-defined function is shown in the attached graph.
Understanding Piecewise FunctionThe function g(x) is defined as follows:
g(x) = -4 if x ≠ 0
g(x) = 5 if x = 0
On the graph, when x is any value other than 0, the function takes the value of -4. This means that there will be a horizontal line at y = -4 for all x ≠ 0. The point (0, 5) will be represented by a solid dot since it's the only point where g(x) equals 5.
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I need to solve this, but the process is confusing and I need someone to help me understand it, please and thank you :))
[tex]\frac {x^2+5x+6}{x - 1}\ \textgreater \ 0[/tex]
Answer:
(-3, -2) ∪ (1, ∞)
Step-by-step explanation:
Given inequality:
[tex]\dfrac{x^2+5x+6}{x-1} > 0[/tex]
Begin by factoring the denominator:
[tex]\begin{aligned}x^2+5x+6&=x^2+2x+3x+6\\&=x(x+2)+3(x+2)\\&=(x+3)(x+2)\end{aligned}[/tex]
Therefore, the factored inequality is:
[tex]\dfrac{(x+3)(x+2)}{x-1} > 0[/tex]
Determine the critical points - these are the points where the rational expression will be zero or undefined.
The rational expression will be zero when the numerator is zero:
[tex](x+3)(x+2)=0 \implies x=-3,\;x=-2[/tex]
Therefore, -3 and -2 are critical points.
The rational expression will be undefined when the denominator is zero:
[tex]x-1=0 \implies x=1[/tex]
Therefore, 1 is a critical point.
So the critical points are -3, -2 and 1.
Create a sign chart, using open dots at each critical point (the inequality is greater than, so the interval doesn't include the values).
Choose a test value for each region, including one to the left of all the critical values and one to the right of all the critical values.
Chosen test values: -4, -2.5, 0, 2
For each test value, determine if the function is positive or negative:
[tex]x=-4 \implies \dfrac{(-4+3)(-4+2)}{-4-1} = \dfrac{(-)(-)}{(-)}=\dfrac{(+)}{(-)}=-[/tex]
[tex]x=-2.5 \implies \dfrac{(-2.5+3)(-2.5+2)}{-2.5-1} = \dfrac{(+)(-)}{(-)}=\dfrac{(-)}{(-)}=+[/tex]
[tex]x=0 \implies \dfrac{(0+3)(0+2)}{0-1} = \dfrac{(+)(+)}{(-)}=\dfrac{(+)}{(-)}=-[/tex]
[tex]x=2 \implies \dfrac{(2+3)(2+2)}{2-1} = \dfrac{(+)(+)}{(+)}=\dfrac{(+)}{(+)}=+[/tex]
Record the results on the sign chart for each region (see attached).
As we need to find the values for which the rational expression is greater than zero, shade the positive regions on the sign chart (see attached). These regions are the solution set.
Remember that the intervals of the solution set should not include the critical points, as the critical points of the numerator make the expression zero, and the critical point of the denominator makes the expression undefined. The intervals of the solution set are those where the rational expression is greater than zero only.
Therefore, the solution set is:
-3 < x < -2 or x > 1
As interval notation:
(-3, -2) ∪ (1, ∞)
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The median weekly income for a student who drops out of high school is 451. Someone with a bachelor's degree from college earns 1053 in that same week. Calculate each person's yearly income and then the difference between them.
The difference between their yearly incomes is $31,304.
To calculate each person's yearly income, we need to multiply their weekly income by the number of weeks in a year. Assuming there are 52 weeks in a year, the yearly income can be calculated as follows:
For the student who drops out of high school:
Yearly Income = Weekly Income x Number of Weeks
= 451 x 52
= 23,452
For someone with a bachelor's degree:
Yearly Income = Weekly Income x Number of Weeks
= 1053 x 52
= 54,756
The difference between their yearly incomes can be found by subtracting the student's yearly income from the bachelor's degree holder's yearly income:
Difference = Bachelor's Yearly Income - Student's Yearly Income
= 54,756 - 23,452
= 31,304
Therefore, the difference between their yearly incomes is $31,304.
It is important to note that these calculations are based on the given information and assumptions. The actual yearly incomes may vary depending on factors such as work hours, additional income sources, deductions, and other financial considerations.
Additionally, it is worth considering that educational attainment is just one factor that can influence income, and there are other variables such as experience, job type, and market conditions that may also impact individuals' earnings.
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Need this soon!! AP Calc AB
Answer:
(Look at the picture)
Derek is making a rectangular prism
That has a volume of 120 cubic inches. The height of his prism is 6 inches. What is the possible length and width
Answer:
the possible length and width b:
1 and 20
10 and 2
5 and 4
120 = 1*20*6
120 = 10*2*6
120 = 5*4*6
The possible length and width for Derek's rectangular prism with a volume of 120 cubic inches and a height of 6 inches is 6 inches and 20 inches, respectively.
To find the possible length and width of Derek's rectangular prism, we can use the formula for the volume of a rectangular prism:
Volume = Length x Width x Height
Given that the volume is 120 cubic inches and the height is 6 inches, we can substitute these values into the formula:
120 = Length x Width x 6
To find the possible values for length and width, we need to factorize 120 and check the combinations that satisfy the equation. Let's find the factors of 120:
1 x 120
2 x 60
3 x 40
4 x 30
5 x 24
6 x 20
8 x 15
10 x 12
Now let's substitute these factors into the equation and solve for the missing dimension:
For the combination 1 x 120:
120 = 1 x 120 x 6
This does not work because the width would be 120 inches, which is not feasible.
For the combination 2 x 60:
120 = 2 x 60 x 6
This does not work because the width would be 60 inches, which is not feasible.
For the combination 3 x 40:
120 = 3 x 40 x 6
This does not work because the width would be 40 inches, which is not feasible.
For the combination 4 x 30:
120 = 4 x 30 x 6
This does not work because the width would be 30 inches, which is not feasible.
For the combination 5 x 24:
120 = 5 x 24 x 6
This does not work because the width would be 24 inches, which is not feasible.
For the combination 6 x 20:
120 = 6 x 20 x 6
This works because the width would be 20 inches:
120 = 6 x 20 x 6
120 = 720
This combination satisfies the equation.
For the combination 8 x 15:
120 = 8 x 15 x 6
This does not work because the width would be 15 inches, which is not feasible.
For the combination 10 x 12:
120 = 10 x 12 x 6
This does not work because the width would be 12 inches, which is not feasible.
Therefore, the possible length and width for Derek's rectangular prism with a volume of 120 cubic inches and a height of 6 inches is 6 inches and 20 inches, respectively.
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I only need help with the f(0)= the equation is above all the rest is filled in thank you
f(0) = -3
I believe, since the graph has a closed circle/point at (0,-3), f(0) should equal -3. Also, the graph 3x-3 has a domain of x>=0.
However, in terms of limits, the limit approaching x-->0 does not exist since the left and right limits do not equal one another.
Hope this helps.
Find the approximate mean for the following
The approximate mean of the number of cars sold by the salesman in the past 10 weeks is 4.1.
To find the approximate mean, first, we add all the numbers in the data set, and then we divide that sum by the total number of values in the data set.
The formula for finding the approximate mean is as follows: Approximate mean = sum of the values in the data set / total number of values in the data set.
The following data set is given: Number of cars sold by a salesman in the past 10 weeks: 3, 5, 2, 4, 7, 5, 6, 3, 2, 4.
To find the approximate mean, we first need to add all the values: 3 + 5 + 2 + 4 + 7 + 5 + 6 + 3 + 2 + 4 = 41 The sum of all the values is 41.
Next, we need to divide this sum by the total number of values in the data set. In this case, the total number of values is 10. Therefore, the approximate mean for the given data set is: Approximate mean = 41 / 10 = 4.1
Therefore, the approximate mean of the number of cars sold by the salesman in the past 10 weeks is 4.1.
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An experiment consists of rolling two fair number cubes. The diagram shows the sample space of all equally likely outcomes. What is the probability of rolling two 2's? Express your answer as a fraction in simplest form.
A canoe team leaves the dock at a bearing of 25° south of east and paddles at a constant speed of 10 mph. There is a 2 mph current moving 80° west of south. What is the canoe's actual speed and
direction? Draw a diagram and show your work to justify your answer. Round the distance to the nearest
hundredth and the direction to the nearest degree. (5 points)
The canoe's actual speed is approximately 9.66 mph at a bearing of 12° south of east.
To determine the canoe's actual speed and direction, we need to consider the vector addition of the canoe's velocity and the current.
Let's start by drawing a diagram to visualize the problem.
We'll use a scale where 1 cm represents 10 mph.
Draw a line segment representing the canoe's velocity of 10 mph at a bearing of 25° south of east.
From the endpoint of the canoe's velocity vector, draw another line segment representing the current's velocity of 2 mph at a bearing of 80° west of south.
Connect the starting point of the canoe's velocity vector with the endpoint of the current's velocity vector to form a triangle.
Next, we can find the resultant velocity (actual speed and direction) of the canoe by calculating the vector sum of the canoe's velocity and the current's velocity.
Using the law of cosines, we can find the magnitude of the resultant velocity:
c² = a² + b² - 2ab [tex]\times[/tex] cos(C)
Where:
a = 10 mph (canoe's velocity)
b = 2 mph (current's velocity)
C = 80° (angle between the velocities)
Substituting the values:
c² = 10² + 2² - 2 [tex]\times[/tex] 10 [tex]\times[/tex] 2 [tex]\times[/tex] cos(80°)
c² = 100 + 4 - 40 [tex]\times[/tex] cos(80°)
Solving for c, the magnitude of the resultant velocity:
c ≈ √(100 + 4 - 40 [tex]\times[/tex] cos(80°))
c ≈ √(104 - 40 [tex]\times[/tex] cos(80°))
To find the direction, we can use the law of sines:
sin(A) / a = sin(C) / c
Where:
A = 25° (angle of the canoe's velocity)
a = 10 mph (magnitude of the canoe's velocity)
C = 80° (angle between the velocities)
c ≈ √(104 - 40 [tex]\times[/tex] cos(80°)) (magnitude of the resultant velocity)
Substituting the values:
sin(25°) / 10 = sin(80°) / √(104 - 40 [tex]\times[/tex] cos(80°))
Solving for sin(80°):
sin(80°) ≈ (sin(25°) [tex]\times[/tex] √(104 - 40 [tex]\times[/tex] cos(80°))) / 10
Finally, we can use the inverse sine function to find the direction:
Direction ≈ arcsin((sin(25°) [tex]\times[/tex]√(104 - 40 [tex]\times[/tex] cos(80°))) / 10)
Calculating the numerical values using a calculator will give us the actual speed and direction of the canoe.
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Current Attempt in Progress
Find the equation of the tangent line to the following curve
at the indicated point.
The equation of the tangent line at the point (108, 6) on the curve y² = x²/(xy - 324) is: y = 6
How to find the equation of the tangent?
The equation is given as:
y² = x²/(xy - 324) at (108, 6)
Differentiating implicitly with respect to x gives:
2y(dy/dx) = (2x(xy - 324) - x²(y - 324)(dy/dx)) / (xy - 324)²
Simplifying further using power rule and chain rule gives us:
[tex]\frac{dy}{dx} = \frac{x^{2}y - 648x }{2y(-324 + xy) +x^{3} }[/tex]
We can find the slope by plugging in x = 108 and y = 6 to get
[tex]\frac{dy}{dx} = \frac{(108^{2}*6) - 648(108) }{2(6)(-324 + (108*6)) + 108^{3} }[/tex]
dy/dx = 0
To find the equation of the tangent line, we use the point-slope form:
y - y₁ = m(x - x₁),
where:
(x₁, y₁) is the given point (108, 6) and m is the slope.
Substituting the values, we have:
y - 6 = 0(x - 108)
y = 6
This is the equation of the tangent line at the point (108, 6) on the curve y² = x²/(xy - 324).
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Type the correct answer in each box. Round your answers to the nearest thousandth.
A company has 200 machines. Each machine has 12% probability of not working.
If you were to pick 40 machines randomly, the probability that 5 would not be working is
and the probability that at least one machine would be working is
the probability that all would be working is
1) The probability that 5 will be working is: 0.187
2) The probability that at least one machine would be working is: 0.006
3) The probability that all would be working is : 1
How to find the probability of working?We are given the parameters as:
Total number of machines = 200
Probability that a Machine is working = 12% = 0.12
1) Now, you want to pick 40 machines and want to find the probability that 5 will be working.
This probability is given by the expression:
P(5 working) = C(40,5) * 0.12⁵·0.88³⁵ ≈ 0.187
where C(n, k) = n!/(k!(n-k)!)
2) The probability that at least one machine would be working is:
0.88⁴⁰ ≈ 0.006
3) The probability that all would be working is the complement of the probability that all have failed. Thus:
P(all working) = 1 - 0.12⁴⁰ ≈ 1
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Fill in the blank with the recursive function. Be sure to include the starting point.
Ashley has 100 books that she wants to give away at the rate of n books per week. Write a recursive function that represents the number of books Ashley has at any time.
The recursive function that gives the number of books Ashley has at any time is ____ = _____
, starting at ____ (I have this answer already, it is 100.)
100
.Every other response to this has been unsatisfactory, so I will elaborate further. This is on PLATOWEB.
If you're a student cramming and reading this for the answer, hi.
The recursive function that represents the number of books Ashley has at any time is Number of books(n) = Number of books(n-1) - n, starting at 100.
The recursive function that represents the number of books Ashley has at any time can be defined as follows:
Number of books(n) = Number of books(n-1) - n
Starting point: Number of books(0) = 100
Explanation:
In the recursive function, "n" represents the number of weeks that have passed. Each week, Ashley gives away "n" books. Therefore, the number of books she has at any time is equal to the number of books she had in the previous week (Number of books(n-1)) minus the number of books given away in the current week (n).
The starting point is given as Number of books(0) = 100, which means initially Ashley has 100 books before any weeks have passed.
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Please show the graph with correct points in x and y. Please specify if it’s a hollow dot or solid dot for each point. I’ll give good rating! Thank you!
The graph of the solution to the inequality is attached as image to this answer.
Understanding Piece-Wise FunctionThe piece-wise defined function h(x) represents different values of y (the output) depending on the value of x (the input). Each interval of x has a different value assigned to it.
In this particular case, the inequality statements define the intervals for x and their corresponding output values.
Let's break it down:
- For values of x that are greater than -3 and less than or equal to -2, h(x) is assigned the value of -1.
- For values of x that are greater than -2 and less than or equal to -1, h(x) is assigned the value of 0.
- For values of x that are greater than -1 and less than or equal to 0, h(x) is assigned the value of 1.
- For values of x that are greater than 0 and less than or equal to 1, h(x) is assigned the value of 2.
Any values of x outside of these intervals are not defined in this piece-wise function and are typically represented as "not a number" (NaN).
For example, if you were to evaluate h(-2.5), it falls within the first interval (-3 < x ≤ -2), so h(-2.5) would be equal to -1. Similarly, if you were to evaluate h(0.5), it falls within the fourth interval (0 < x ≤ 1), so h(0.5) would be equal to 2.
The graph of the piece-wise function h(x) consists of horizontal line segments connecting the specified values of y for each interval, resulting in a step-like pattern.
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