Given the figure below with the measures shown, is AEC similar to BDC?

Given The Figure Below With The Measures Shown, Is AEC Similar To BDC?

Answers

Answer 1

Answer:

yes they're similar

Step-by-step explanation:

Answer 2

Answer:

Step-by-step explanation:

21


Related Questions

when overhead is allocated using the department allocation method, there is one cost pool per blank .

Answers

When using the department allocation method for allocating overhead costs, there is typically one cost pool per department. This means that all the overhead costs associated with a particular department are combined into a single pool.

The department allocation method is one of several ways to allocate overhead costs to products or services. With this method, overhead costs are allocated based on the department or functional area that incurs them. For example, a manufacturing company might have separate departments for production, maintenance, and administration. Each of these departments incurs overhead costs such as rent, utilities, and supplies.

To use the department allocation method, the first step is to identify the cost pools associated with each department. This involves grouping all the overhead costs incurred by each department into a single pool. For instance, all the overhead costs incurred by the production department might be combined into a single production cost pool.

Once the cost pools have been established, the next step is to allocate them to the products or services produced by each department. This is typically done using a predetermined overhead rate, which is calculated by dividing the total overhead costs in a cost pool by a measure of activity, such as direct labor hours or machine hours. The predetermined overhead rate is then used to allocate overhead costs to each product or service based on the amount of activity it requires.

Overall, the department allocation method can be a useful way to allocate overhead costs in organizations that have multiple departments or functional areas. By grouping overhead costs into separate cost pools for each department, it becomes easier to identify the costs associated with each area of the organization and to allocate those costs fairly to the products or services that each department produces.

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Part A

Consider functions m and n: n(x)=1/4x^2-2x+4

The value of m(n(2)) is __

The value of n(m(1)) is __


Part B

Consider the functions m and n

n(x)=1/4x^2-2x+4

What is the value of n(m(4))

A. -4

B. -2

C. 0

D. 4


Part C

Given your answers to Katy’s A and B, do you think functions m and n are inverse functions? Explain your reasoning

Answers

Part A:

To find the value of m(n(2)), we need to first find the value of n(2) and then use that value to find m.

n(2) = 1/4(2)^2 - 2(2) + 4

    = 1/4(4) - 4 + 4

    = 1 - 4 + 4

    = 1

So, n(2) = 1.

Now, we can find m(1) using the equation for m:

m(1) = 3 - 2(1) + 4

    = 5

Therefore, m(n(2)) = m(1) = 5.

To find the value of n(m(1)), we need to first find the value of m(1) and then use that value to find n.

m(1) = 3 - 2(1) + 4

    = 5

So, m(1) = 5.

Now, we can find n(5) using the equation for n:

n(5) = 1/4(5)^2 - 2(5) + 4

    = 1/4(25) - 10 + 4

    = 6.25 - 10 + 4

    = 0.25

Therefore, n(m(1)) = n(5) = 0.25.

Part B:

To find the value of n(m(4)), we need to first find the value of m(4) and then use that value to find n.

m(4) = 3 - 2(4) + 4

    = -1

So, m(4) = -1.

Now, we can find n(-1) using the equation for n:

n(-1) = 1/4(-1)^2 - 2(-1) + 4

     = 1/4(1) + 2 + 4

     = 1.25 + 2 + 4

     = 7.25

Therefore, n(m(4)) = n(-1) = 7.25.

The answer is not one of the options provided.

Part C:

The functions m and n are inverse functions if and only if applying them in either order gives the identity function, i.e., m(n(x)) = x and n(m(x)) = x for all x in the domain of the functions.

From our calculations in Part A, we know that m(n(2)) = 5 and n(m(1)) = 0.25, which means that m(n(x)) ≠ x and n(m(x)) ≠ x for some values of x in the domain of the functions. Therefore, we can conclude that functions m and n are not inverse functions.

Figure KLHJ is a kite. Angle HLK has a measure of 128 degrees and angle JKL has a measure of 50 degrees. Find the measure of angle JHL.

Answers

The measures of angles of the kite are ∠JHL = 91°

Given data ,

Let the kite be represented as KLHJ

where the measure of angle ∠HLK = 128°

And , the measure of ∠JKL = 50°

Now , kites must have two sets of equivalent adjacent sides & one set of congruent opposite angles

So , the angles are

128° + 50° + 2x = 360°

On simplifying , we get

2x = 360° - 178°

2x = 182°

Divide by 2 on both sides , we get

x = 91°

Hence , the angle of kite is 91°

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List all possible rational roots.
List the number of possible rational positive and negative roots. List the possible number of imaginary roots.
Find the roots real and imaginary.

f(x) = 5x³-4x² + 20a - 16

Answers

The possible number of real and imaginary roots for f(x) = 5x³-4x² + 20a - 16 is 3.

To determine the quantity of feasible rational superb and bad roots and the possible range of imaginary roots for the polynomial function:

f(x) = 5x³ - 4x² + 20a - 16

We can use the Rational Root Theorem and Descartes' Rule of Signs to analyze the equation.

Rational Root Theorem:

The Rational Root Theorem states that any rational root of a polynomial equation with integer coefficients ought to be in the shape p/q, in which p is a component of the constant time period and q is a thing of the main coefficient.

For the given polynomial f(x) = 5x³ - 4x² + 20a - sixteen, the regular time period is -16, and the leading coefficient is 5.

Factors of -sixteen: ±1, ±2, ±4, ±8, ±16

Factors of five: ±1, ±5

Possible rational positive roots: 1/1, 2/1, 4/1, 8/1, 16/1, 1/5, 2/5, 4/5, 8/5, 16/5

Possible rational negative roots: -1/1, -2/1, -4/1, -8/1, -16/1, -1/5, -2/5, -4/5, -8/5, -16/5

Note: The values of 'a' in the equation do not affect the viable rational roots considering that it is a regular time period.

Possible variety of imaginary roots:

According to the Fundamental Theorem of Algebra, a polynomial equation of diploma n will have precisely n complicated roots, which include each real and imaginary root. In this situation, the degree of the polynomial is three.

Therefore, the viable wide variety of imaginary roots for the equation is 3.

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bill can drive from springfield to teton at a certain rate of speed in 6 hours. if he increase his speed by 20mph he can make the trip in 4 hours. how far is it from springfield to teton

Answers

Let's denote the distance from Springfield to Teton as "D" and Bill's original rate of speed as "R" (in miles per hour). We know that at his original speed, he can travel from Springfield to Teton in 6 hours.

So, we can express this relationship as: D = R x6. Now, when Bill increases his speed by 20 mph, he can make the trip in 4 hours. So, we can express this new relationship as: D = (R + 20) x 4. Since both equations represent the distance from Springfield to Teton, we can set them equal to each other: Rx6 = (R + 20) x4 . Now, let's solve for R:

6R = 4R + 80  

2R = 80

R = 40 mph

Now that we know Bill's original rate of speed, we can calculate the distance from Springfield to Teton using either equation. Let's use the first one:
D = R x6
D = 40 x 6
D = 240 miles
So, the distance from Springfield to Teton is 240 miles.

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A wheelchair ramp for a business cannot be steeper than 5∘. A similar ramp for a home can be 10∘.
What is the difference in degrees of these two ramps? Explain.

Answers

The difference in degrees of the two ramps is  = 5° - 10° = - 5°

Ramp calculation .

The difference in degrees between the two ramps can be calculated by subtracting the steepness of the home ramp 10° from the steepness of the business ramp 5°

The difference in degrees = 5° - 10° = - 5°

The result is - 5°, indicating that the home ramp 5 degrees steeper than the business ramp. The negative sign implies that the home ramp exceeds the steepness limit set for the business ramp.

It's important to note that a negative difference in degrees doesint make practical sense in this context. The difference should be expressed as a positive value, so incase. we can say that the business ramp is 5 degrees less steep than the home ramp.

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3/4 + (1/3 divided by 1/6) - (- 1/2)

Answers

3/4 + (1/3 divided by 1/6) - (-1/2) = 3.

To solve this expression, we need to follow the order of operations: first, we simplify the expression inside the parentheses, then we perform any multiplication or division operations from left to right, and finally, we perform any addition or subtraction operations from left to right.

Let's start:

Simplify the expression inside the parentheses:

1/3 divided by 1/6 = (1/3) x (6/1) = 2

Rewrite the original expression with the simplified expression:

3/4 + 2 - (-1/2)

Solve the expression inside the parentheses:

-(-1/2) = 1/2 (double negative becomes a positive)

Rewrite the expression again with the simplified expression:

3/4 + 2 + 1/2

Convert all the fractions to a common denominator, which is 4:

3/4 + (2 x 4/4) + (1/2 x 2/2 x 2/2 x 2/2)

= 3/4 + 8/4 + 4/16

Add the fractions together:

3/4 + 8/4 + 1/4

= 12/4

= 3

Therefore, 3/4 + (1/3 divided by 1/6) - (-1/2) = 3.

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shawntell is training for a relay race. she ran 2{,}0002,0002, comma, 000 feet every day for 666 days. how many yards did shawntell run?

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Shawntell ran a total of 4,400,000 feet or 1,466,666.67 yards in 666 days of training for the relay race. To convert 444,000 feet to yards, we need to divide by 3 again since 1 yard is equal to 3 feet. So 1,332,000 feet ÷ 3 feet/yard + 148,000 yards = 1,466,666.67 yards

To convert 2,000 feet to yards, we need to divide by 3 since 1 yard is equal to 3 feet. So, 2,000 feet is equal to 666.67 yards.

To find out how many yards Shawntell ran in total, we can multiply 2,000 feet by 666 days, which gives us:

2,000 feet/day x 666 days = 1,332,000 feet

To convert 1,332,000 feet to yards, we need to divide by 3 again since 1 yard is equal to 3 feet. So, 1,332,000 feet is equal to 444,000 yards.

However, we need to remember that Shawntell ran 2,000 feet per day, not per yard. So, we need to divide 444,000 yards by 2,000 to find out how many days Shawntell trained for:

444,000 yards ÷ 2,000 feet/day = 222 days

This means that Shawntell ran a total of 2,000 feet x 222 days = 444,000 feet.

To convert 444,000 feet to yards, we need to divide by 3 again since 1 yard is equal to 3 feet. So, Shawntell ran a total of:

444,000 feet ÷ 3 feet/yard = 148,000 yards

Adding this to the previous calculation, we get:

1,332,000 feet ÷ 3 feet/yard + 148,000 yards = 1,466,666.67 yards

Therefore, Shawntell ran a total of 1,466,666.67 yards in 666 days of training for the relay race.

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8. the solution of the initial-value problem x'= (-1 1)x, x(0) = (-2, 5)

Answers

the solution to the initial-value problem is:

x(t) = (-4.5e^(-t) + 2.5e^(t), 5e^(t)).

To solve the initial-value problem x' = (-1 1)x, x(0) = (-2, 5), we can use the matrix exponential method.

First, we find the eigenvalues and eigenvectors of the coefficient matrix (-1 1):

| -1  1 |
|       | = (λ + 1)(λ - 1) = 0
|  0  -1|

The eigenvalues are λ = -1 and λ = 1.

For λ = -1, we have:

| 0 1 |
|     | v = 0
| 0 0 |

This gives us the eigenvector v1 = (1, 0).

For λ = 1, we have:

| -2 1 |
|      | v = 0
|  0 0 |

This gives us the eigenvector v2 = (1, 2).

We can then write the general solution as:

x(t) = c1 * e^(-t) * v1 + c2 * e^(t) * v2

where c1 and c2 are constants to be determined from the initial condition x(0) = (-2, 5).

Substituting t = 0 and equating coefficients, we get:

x(0) = c1 * v1 + c2 * v2
(-2, 5) = c1 * (1, 0) + c2 * (1, 2)
-2 = c1 + c2
5 = 2c2

Solving for c1 and c2, we get:

c1 = -2 - c2 = -2 - (5/2) = -9/2
c2 = 5/2

Therefore, the solution to the initial-value problem is:

x(t) = (-9/2) * e^(-t) * (1, 0) + (5/2) * e^(t) * (1, 2)

Simplifying this expression, we get:

x(t) = (-9/2) * (e^(-t), 0) + (5/2) * (e^(t), 2e^(t))
    = (-4.5e^(-t) + 2.5e^(t), 5e^(t))

So the solution is x(t) = (-4.5e^(-t) + 2.5e^(t), 5e^(t)).

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find the pdf of e−x for x ∼ expo(1)

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Therefore,  The pdf of e^(−x) for x ∼ expo(1) is f(x) = e^(−x) for x ≥ 0. The pdf is a decreasing function that approaches zero as x increases.

The probability density function (pdf) of an exponential distribution with parameter λ is f(x) = λe^(−λx) for x ≥ 0. In this case, λ = 1, so the pdf of e^(−x) for x ∼ expo(1) is f(x) = e^(−x) for x ≥ 0. This means that the probability of observing a value of e^(−x) between a and b is given by the integral of e^(−x) from a to b, which is equal to e^(−a) − e^(−b). The graph of this pdf shows that it is a decreasing function that approaches zero as x increases.

Therefore,  The pdf of e^(−x) for x ∼ expo(1) is f(x) = e^(−x) for x ≥ 0. The pdf is a decreasing function that approaches zero as x increases.

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there are 10 students participating in a spelling bee. in how many ways can the students who compete first and second in the bee be chosen?

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There are 90 ways to choose the students who compete first and second in the spelling bee.

Since the order of choosing students matters in this question, we need to calculate the number of permutations. 10 students are participating in the spelling bee, and we need to choose 2 of them for the first and second place. The first student can be chosen in 10 ways, and the second student can be chosen in 9 ways (since we cannot choose the same student twice). Therefore, the number of ways to choose first and second place in the spelling bee is:

Number of ways = 10 x 9 = 90

Therefore, there are 90 ways to choose the students who compete first and second in the spelling bee.

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Solve for x. Options are 11,12,10, and 9.

Answers

Using the fact that we can make two similar triangles, we will see that x = 10.

How to find the value of x?

The quotients between the two lengths of the sides of the triangle must be equal (this happens because the triangles are similar triangles), then we can write:

25/15 = (25 + x)/(15 + 6)

Now we can solve that equation for x:

25/15 = (25 + x)/21

25*21/15 = 25 + x

35 = 25 + x

35 - 25 = x

10 = x

The correct option is C.

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. jack has a piece of rope that is 7.5 meters long. he gives his sister a 150 cm piece. he cuts the remaining piece into 10 equal sections. how long is each section?

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Jack has a 7.5 meter (750 cm) rope, gives his sister a 150 cm piece, and cuts the remaining 600 cm into 10 equal sections, with each section being 60 cm long.

Jack's rope is 7.5 meters long, which is equal to 750 centimetres. He gives his sister a piece of 150 centimetres, which leaves him with 600 centimetres of rope.
Jack then cuts the remaining piece into 10 equal sections. To find the length of each section, we can divide the total length of the rope (600 cm) by the number of sections (10):
600 cm ÷ 10 sections = 60 cm per section
Therefore, each section of rope that Jack cuts will be 60 centimetres long.

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1/4(n+7)=5n−7n+1 What does "n" equal

Answers

In the expression, n is equal to  -1/3.

We have,

First, let's simplify the left side of the equation by distributing 1/4 to n and 1/4 to 7:

(1/4)n + (1/4)(7) = 5n - 7n + 1

Simplifying further by adding the like terms:

(1/4)n + 7/4 = -2n + 1

To get rid of the fraction, we can multiply both sides of the equation by 4:

4(1/4)n + 4(7/4) = 4(-2n + 1)

Simplifying:

n + 7 = -8n + 4

Bringing all the n terms to one side and all the constant terms to the other side:

n + 8n = 4 - 7

9n = -3

Dividing both sides by 9:

n = -1/3

Therefore,

In the expression, n is equal to  -1/3.

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if a basket of goods costs $100 in the united states and 300 pesos in mexico, and if the exchange rate is $1 = 5 pesos, then the dollar price of the basket of goods in mexico is:

Answers

The dollar price of the basket of goods in Mexico is $60. To find the dollar price of the basket of goods in Mexico,

we need to convert the price from pesos to dollars using the given exchange rate. We can do this by dividing the price in pesos by the exchange rate:

300 pesos ÷ 5 pesos/$1 = $60

Therefore, the dollar price of the basket of goods in Mexico is $60. It's important to note that exchange rates can fluctuate over time, which can impact the relative prices of goods between countries.

In this example, a weaker peso relative to the dollar makes the basket of goods appear cheaper in Mexico than in the United States.

However, if the exchange rate were to change, the relative prices of goods would also change.

Additionally, other factors such as tariffs, taxes, and transportation costs can also impact the prices of goods in different countries.

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8.13 let w have a u (π, 2π) distribution. what is larger: e [sin(w )] or sin(e[w])? check your answer by computing these two numbers.

Answers

The value of the expression is sin(E[w]) = -1 is larger than E[sin(w)] = 2/π.

We need to find whether E[sin(w)] or sin(E[w]) is larger.

Using Jensen's inequality, which states that for a convex function g, E[g(x)] >= g(E[x]), we can say:

E[sin(w)] = ∫ sin(w) * f(w) dw

Where f(w) is the probability density function of w

Taking g(x) = sin(x), which is a concave function, and using Jensen's inequality, we can say:

sin(E[w]) >= E[sin(w)]

Therefore, sin(E[w]) is larger than E[sin(w)].

Now, let's compute these two numbers:

E[sin(w)] = ∫ sin(w) * f(w) dw = ∫ sin(w) * 1/(2π - π) dw = 1/π * [(-cos(w))]π 2π = (cos(π) - cos(2π))/π = 2/π

sin(E[w]) = sin(E[w]) = sin(3π/2) = -1

Therefore, sin(E[w]) = -1 is larger than E[sin(w)] = 2/π.

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what is the length of segment RS with endpoints R (6-,2)and s(-2,-3)

Answers

Answer: 6.4031

Step-by-step explanation:

d = √((x2 - x1)2 + (y2 - y1)2)

Find the difference between coordinates:

(x2 - x1) = (-2 - -6) = 4

(y2 - y1) = (-3 - 2) = -5

Square the results and sum them up:

(4)2 + (-5)2 = 16 + 25 = 41

Now Find the square root and that's your result:

Exact solution: √41 = √41

Approximate solution: 6.4031

Hope it helped

describe a line, segment, or ray that bisects a segment at a right angle

Answers

A terminology that is described as a line, segment, or ray that bisects a segment at a right angle include the following: B. Perpendicular bisector.

What is a perpendicular bisector?

In Mathematics and Geometry, a perpendicular bisector simply refers to a line, segment, or ray that bisects or divides a line segment exactly into two (2) equal halves and forms an angle that has a magnitude of 90 degrees at the point of intersection.

This ultimately implies that, a perpendicular bisector can be used to bisects or divides a line segment exactly into two (2) equal halves, in order to forms a right angle with an angle that has a magnitude of 90 degrees at the point of intersection.

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Complete Question:

Which of the following is described as a line, segment, or ray that bisects a segment at a right angle?

A. Slope

B. Perpendicular bisector

C. Midpoint

D. Angle bisector

Classify the following random variable according to whether it is discrete or continuous.The number of cups of coffee sold in a cafeteria during lunch.A) continuousB) discrete

Answers

The random variable "the number of cups of coffee sold in a cafeteria during lunch" is discrete.

This is because the variable can only take on integer values, such as 0, 1, 2, 3, and so on. It is not possible to sell a fraction of a cup of coffee, which is what would make it a continuous variable.

A discrete random variable has a finite or countably infinite number of possible outcomes, and each outcome has a non-zero probability.

In contrast, a continuous random variable can take on any value within a certain range, and the probabilities are described by a probability density function.

In this case, since the number of cups of coffee sold can only take on whole number values, it is a discrete random variable.

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Given h(x) = −2x + 12, calculate h(−4).
−8
4
8
20

Answers

Answer:

20

Step-by-step explanation:

h (x) = - 2x + 12

h (-4) = - 2(-4) + 12

        = 8 + 12

h (-4) = 20

Which residual plot would you examine to determine whether the assumption of constant error variance is satisfied for a model with tut, independent variables x; and x2? a. Plot the residuals against the independent variable x2 b. Plot the residuals against the independent variable x1 c. Plot the residuals against predicted values y d. Plot the residuals against observed y values.

Answers

To determine whether the assumption of constant error variance is satisfied for a model with tut, independent variables x, and x₂, you would examine the residual plot where the residuals are plotted against predicted values y.

This plot is also known as the plot of residuals versus fitted values. In this plot, if the residuals are randomly scattered around the horizontal line of zero, then the assumption of constant error variance is satisfied. However, if there is a pattern in the residuals, such as a funnel shape or a curve, then the assumption of constant error variance may not be met. It is important to ensure that the assumption of constant error variance is met, as violation of this assumption can lead to biased and inefficient estimates of the model parameters. Additionally, it can affect the reliability of statistical inferences and lead to incorrect conclusions.
In summary, to determine whether the assumption of constant error variance is satisfied for a model with tut, independent variables x, and x₂, you would examine the residual plot where the residuals are plotted against predicted values y. It is important to check this assumption to ensure the validity of the model and the accuracy of the results.This plot allows you to assess the variance of the residuals and identify any patterns, which could indicate that the assumption of constant error variance may not be met. If the plot shows no discernible pattern and the spread of residuals appears to be uniform across the range of predicted values, the assumption of constant error variance is likely satisfied.

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Which line is a skew line to ?

A.
B.
C.
D.

Answers

Skew lines are lines in three-dimensional space that do not intersect and are not parallel.

Unlike parallel lines, skew lines do not lie in the same plane. Instead, they are positioned at an angle to each other, which means they are neither perpendicular nor parallel. Because they do not intersect, they never meet, no matter how far they are extended. This property makes skew lines different from parallel lines, which can be extended infinitely far and remain equidistant from each other.

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Based on your work in part A), find a function y(x) that satisfies the differential equation 22 y () In(x+1) V1 - 12 1+3 and initial condition y(0) = 5. + + 1+1

Answers

To find a function y(x) that satisfies the differential equation 22y'(x)/(In(x+1)V1 - 12(1+3))+1/(1+1) and initial condition y(0)=5, we first need to separate the variables and integrate both sides.

Starting with the differential equation:

22y'(x)/(In(x+1)V1 - 12(1+3))+1/(1+1) = 0

We can rearrange to get:

22y'(x) = -1/(1+1) * (In(x+1)V1 - 12(1+3))

Dividing both sides by 22 and integrating with respect to x, we get:

y(x) = (-1/22) * (In(x+1)V1 - 12(1+3)) + C

To solve for the constant C, we can use the initial condition y(0) = 5:

y(0) = (-1/22) * (In(0+1)V1 - 12(1+3)) + C

Simplifying:

5 = (-1/22) * (In(V1) - 12(4)) + C

5 = (-1/22) * (In(V1) - 48) + C

C = 5 + (1/22) * (In(V1) - 48)

Plugging in the value of C, we get the final solution:

y(x) = (-1/22) * (In(x+1)V1 - 12(1+3)) + 5 + (1/22) * (In(V1) - 48)

This function satisfies the given differential equation and initial condition.

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Jacki has just completed this table using a rule for changing x into y. Which rule was she using?

Answers

Jackie use the rule y = 3x+4.

Given that there is table giving the values of x and y,

The equation of a line is linear in the variables x and y which represents the relation between the coordinates of every point (x, y) on the line. i.e., the equation of line is satisfied by all points on it.

The equation of a line can be formed with the help of the slope of the line and a point on the line.

The slope of the line is the inclination of the line with the positive x-axis and is expressed as a numeric integer, fraction, or the tangent of the angle it makes with the positive x-axis.

The point refers to a point on the with the x coordinate and the y coordinate.

Considering the two points, (0, 4) and (1, 7),

By using these points, we will find the line by which the points are passing,

So, we know that equation of a line passing through two points is given by,

y - y₁ = y₂ - y₁ / x₂ - x₁ (x - x₁)

y - 4 = 7-4 / 1-0 (x - 0)

y - 4 = 3x

y = 3x+4

Hence Jackie use the rule y = 3x+4.

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About 3.9×10^7 people live in calfornia .About 1.3×10^6 people live in main . About how many more people live in calforina than live in main ?

Answers

3.77×10⁷ live more in California.

What is word problem?

A word problem is a few sentences describing a 'real-life' scenario where a problem needs to be solved by way of a mathematical calculation.

This statements are interpreted into mathematical equation or expression.

There are 3.9 × 10⁷ people i.e 39000000 at California and 1.3× 10⁶ i.e 1300000 In main.

To know the difference between the two cities population, we subtract the population of main from California

Therefore ;

39000000 - 1300000

= 37700000

= 3.77×10⁷

therefore 3.77×10⁷ live more in California

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Help Please! Need this for my upcoming class and don't understand!

Answers

The angles and coordinates of vectors are listed below:

Case A: θ = 0°, θ = 0 rad, (x, y) = 5 · (1, 0)

Case B: θ = 40°, θ = 2π / 9 rad, (x, y) = 5 · (0.766, 0.643)

Case C: θ = 80°, θ = 4π / 9 rad, (x, y) = 5 · (0.174, 0.985)

Case D: θ = 120°, θ = 2π / 3 rad, (x, y) = 5 · (- 0.5, 0.866)

Case E: θ = 160°, θ = 8π / 9 rad, (x, y) = 5 · (- 0.939, 0.342)

Case F: θ = 200°, θ = 10π / 9 rad, (x, y) = 5 · (- 0.939, - 0.342)

Case G: θ = 240°, θ = 4π / 3 rad, (x, y) = 5 · (- 0.5, - 0.866)

Case H: θ = 280°, θ = 14π / 9 rad, (x, y) = 5 · (0.174, - 0.985)

Case I: θ = 320°, θ = 16π / 9 rad, (x, y) = 5 · (0.766, - 0.643)

How to determine the angles and coordinates of vectors

In this question we must determine the angles and coordinates of vectors within a geometric system consisting in a circle centered at a Cartesian plane. Angles and vectors can be found by means of the following definitions:

Angles - Degrees

θ = (n / 9) · 360°, for 0 ≤ n ≤ 8.

Angles - Radians

θ = (n / 9) · 2π, for 0 ≤ n ≤ 8.

Vector

(x, y) = r · (cos θ, sin θ)

Where r is the norm of the vector.

Now we proceed to determine the angles and vectors:

Case A (n = 0)

θ = 0°, θ = 0 rad, (x, y) = 5 · (1, 0)

Case B (n = 1)

θ = 40°, θ = 2π / 9 rad, (x, y) = 5 · (0.766, 0.643)

Case C (n = 2)

θ = 80°, θ = 4π / 9 rad, (x, y) = 5 · (0.174, 0.985)

Case D (n = 3)

θ = 120°, θ = 2π / 3 rad, (x, y) = 5 · (- 0.5, 0.866)

Case E (n = 4)

θ = 160°, θ = 8π / 9 rad, (x, y) = 5 · (- 0.939, 0.342)

Case F (n = 5)

θ = 200°, θ = 10π / 9 rad, (x, y) = 5 · (- 0.939, - 0.342)

Case G (n = 6)

θ = 240°, θ = 4π / 3 rad, (x, y) = 5 · (- 0.5, - 0.866)

Case H (n = 7)

θ = 280°, θ = 14π / 9 rad, (x, y) = 5 · (0.174, - 0.985)

Case I (n = 8)

θ = 320°, θ = 16π / 9 rad, (x, y) = 5 · (0.766, - 0.643)

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What is the value of x? Type your answer in the box (do not type degrees or use the symbol).

Answers

The numerical value of x in the angles is 12.

What is the numerical value of x?

The sum of angles of a straight line always add to 180 degrees.

From the diagram:

Angle 1 = ( 10x - 20 ) degrees

Angle 2 = ( 6x + 8 ) degrees

x = ?

Since angl 1 and angle 1 are on a straight line, their sum will give 180 degrees.

Hence:

Angle 1 + angle 2 = 180

Plug in the values:

( 10x - 20 ) + ( 6x + 8 ) = 180

Solve for x.

Collect and add like terms

10x + 6x -20 + 8 = 180

16x - 12 = 180

16x = 180 + 12

16x = 192

Divide both sides by 16

x = 192/16

x = 12

Therefore, x has a value of 12.

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A gift shop uses two sizes of boxes for presents. These boxes have exactly the same shape. The smaller box is 16cm long, and the larger box is 18cm long. If 1472cm2 of wrapping paper is needed to cover the smaller box, how much wrapping paper is needed to cover the larger

Answers

If 1472cm² of wrapping paper is needed to cover the smaller box, approximately 1672cm² of wrapping paper is needed to cover the larger box (assuming the surface area is directly proportional to the length).

Since the smaller and larger boxes have exactly the same shape, we can assume that their dimensions are proportional.

Let's denote the width and height of the smaller box as "w" and "h," respectively, and the width and height of the larger box as "W" and "H," respectively.

We know that the length of the smaller box is 16 cm, so we have:

Length of smaller box = 16 cm

Width of smaller box = w

Height of smaller box = h

To find the dimensions of the larger box, we can set up a proportion based on the lengths of the boxes:

16 cm / 18 cm = w / W

From this proportion, we can solve for W:

[tex]W = (18 cm \times w) / 16 cm[/tex]

Now, let's consider the surface area of the boxes.

The surface area of a box is given by the sum of the areas of its six faces. Since the boxes have the same shape, the ratio of their surface areas will be equal to the square of the ratio of their lengths:

Surface area of smaller box / Surface area of larger box = (16 cm / 18 cm)^2.

We know that the surface area of the smaller box is 1472 cm^2, so we can set up the equation:

[tex]1472 cm^2[/tex] / Surface area of larger box [tex]= (16 cm / 18 cm)^2[/tex]

To find the surface area of the larger box, we rearrange the equation:

[tex]Surface $area of larger box = 1472 cm^2 / [(16 cm / 18 cm)^2][/tex]

Now we can substitute the value of W into the equation to find the surface area of the larger box:

Surface area of larger box [tex]= 1472 cm^2 / [(16 cm / 18 cm)^2] = 1472 cm^2 / [(18 cm \times w / 16 cm)^2][/tex]

[tex]= 1472 cm^2 / [(18 \times w / 16)^2] = 1472 cm^2 / [(9w / 8)^2][/tex]

[tex]= 1472 cm^2 / [(81w^2 / 64)][/tex]

Simplifying further:

Surface area of larger box [tex]= (1472 cm^2 \times 64) / (81w^2)[/tex]

So the amount of wrapping paper needed to cover the larger box is given by the surface area of the larger box, which is:

[tex](1472 cm^2 \times 64) / (81w^2)[/tex]

Note that we don't have enough information to calculate the exact value of the wrapping paper needed to cover the larger box since we don't know the width "w" of the smaller box.

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Find F'(x) where F is defined on [0, 1] as follows: F(x) =∫ x^2 0 f(t)dt. Where f is continuous on [0, 1] Be sure to justify each step (e.g. where are you using tire fundamental theorem of Calculus?)

Answers

The derivative of F(x) is 2x times the value of f at x^2.

The problem asks to find the derivative of the function F(x) defined by an integral with respect to the variable x. The fundamental theorem of calculus relates the integral of a function over an interval to the antiderivative of the function evaluated at the endpoints of the interval.

In this case, we have:

F(x) = ∫ x^2 0 f(t) dt

By the fundamental theorem of calculus, we can take the derivative of F(x) by differentiating the integrand with respect to x:

F'(x) = d/dx [∫ x^2 0 f(t) dt]

Using the chain rule of differentiation, we can write:

F'(x) = f(x^2) * d/dx [x^2] - f(0) * d/dx [0]

The second term is zero because it's a constant. The first term can be simplified using the power rule of differentiation:

F'(x) = 2x * f(x^2)

Therefore, the derivative of F(x) is given by F'(x) = 2x * f(x^2).

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determine the point estimate of the population proportion, the margin of error for each confidence interval, and the number of individuals in the sample with the specified characteristic, x, for the sample size provided. 11. Lower bound: 0.201, upper bound: 0.249, n = 1200 12. Lower bound: 0.051, upper bound: 0.074, n 1120

Answers

To determine the point estimate of the population proportion, we can take the midpoint of the confidence interval, which is (0.201 + 0.249) / 2 = 0.225.

To find the margin of error, we can use the formula:

margin of error = (upper bound - point estimate) / z*,

where z* is the z-score corresponding to the desired level of confidence. Let's assume a 95% confidence level, which corresponds to a z-score of 1.96.

margin of error = (0.249 - 0.225) / 1.96 = 0.0122

Therefore, the margin of error is approximately 0.0122.

Finally, we don't know the number of individuals in the sample with the specified characteristic, x, so we cannot determine this value.

Again, to determine the point estimate of the population proportion, we can take the midpoint of the confidence interval, which is (0.051 + 0.074) / 2 = 0.0625.

To find the margin of error, we can use the same formula as above:

margin of error = (upper bound - point estimate) / z*

Assuming a 95% confidence level:

margin of error = (0.074 - 0.0625) / 1.96 = 0.0059

Therefore, the margin of error is approximately 0.0059.

Finally, we don't know the number of individuals in the sample with the specified characteristic, x, so we cannot determine this value.

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