A satellite dish has a parabolic cross section and is 10 feet deep. The focus is 4 feet from the vertex. Find the width of the satellite dish at the opening. Round your answer to the nearest foot

The exact value of cot A is 46/85.3

To determine the value of the identity, we need to know the different trigonometric identities.

These trigonometric identities are enumerated as;

From the information given, we have that;

sec A = 97/4

Then, we have that;

Hypotenuse = 97

Adjacent = 46

Using the Pythagorean theorem

Opposite = 85. 4

The identity for cot A is;

cot A = 46/85.4

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The radius of convergence, r, of the series [infinity] (x − 8)n n2 1 n = 0 is 1.

The radius of convergence of a power series is a non-negative real number that determines the interval in which the series converges. The radius of convergence can be found by applying the ratio test to the series, which involves taking the limit as n approaches infinity of the absolute value of the ratio of the (n+1)th term to the nth term. In this case, we have:

lim n→∞ |(x − 8)n+1 n+12| / |(x − 8)n n12|

= lim n→∞ |(x − 8) / (n+1)|

Since this limit exists only if |x − 8| < ∞, the radius of convergence is 1. This means that the series converges for all x such that |x − 8| < 1, and diverges for all x such that |x − 8| > 1. The behavior of the series at the endpoints of the interval, x = 7 and x = 9, needs to be checked separately using other convergence tests.

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yes

If it’s TRINOMIAL then it has 3 terms in it (this can be seen as TRI- means 3)

The above expression has 3 terms in it therefore it us trinomial

Answer:

1/9 or about 11%

Step-by-step explanation:

Take 1/6 (probability of getting the number 5 once) times 4/6 (the number of times the die is tossed) and you get 1/9.

In a 3 x 3 between subjects factorial design, there are four sources of variance.

A 3 x 3 between subjects factorial design involves two independent variables, each with three levels, and participants are randomly assigned to different combinations of these levels. In this design, the four sources of variance are as follows:

Main Effect of Variable A: This source of variance represents the overall effect of the levels of the first independent variable. It assesses whether there are significant differences between the means of the three groups created by varying levels of Variable A.

Main Effect of Variable B: This source of variance represents the overall effect of the levels of the second independent variable. It examines whether there are significant differences between the means of the three groups created by varying levels of Variable B.

Interaction Effect: This source of variance assesses whether there is an interaction between the two independent variables. It examines whether the effect of one independent variable on the dependent variable differs across the levels of the other independent variable.

It evaluates whether the combined effect of the independent variables is greater (or lesser) than the sum of their individual effects.

Error Variance: This source of variance represents the variability in the dependent variable that cannot be accounted for by the independent variables. It includes random error, individual differences, and any other uncontrolled factors that may influence the outcome.

Therefore, in a 3 x 3 between subjects factorial design, there are four sources of variance: the main effects of Variable A and Variable B, the interaction effect between the two variables, and the error variance.

Each of these sources contributes to understanding the overall pattern of results and the relationships between the variables in the design.

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A number between 55 and 101 that is a multiple of 3, 5, and 9 is 90.

To find a number between 55 and 101 that is a multiple of 3, 5, and 9, we need to find the least common multiple (LCM) of 3, 5, and 9, and then find a multiple of that LCM between 55 and 101.

To find the LCM of 3, 5, and 9, we can list the prime factors of each number and multiply the highest power of each prime factor together. The prime factors of 3 are 3, the prime factors of 5 are 5, and the prime factors of 9 are 3 and 3. So the LCM of 3, 5, and 9 is

3 x 3 x 5 = 45.

Now we need to find a multiple of 45 between 55 and 101. We can start by dividing 55 by 45 to see how many 45s go into 55: 1 with a remainder of 10. So the first multiple of 45 that is greater than 55 is

45 x 2 = 90.

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Complete question is:

What is a number that is between 55 and 101 that is a multiple of 3, 5, and 9

The b-matrix for the transformation x↦ax is found by multiplying the matrix a with each vector in b and forming a matrix with the resulting columns. This is done to express the transformation in terms of the basis vectors b1 and b2.

To find the b-matrix for the transformation x↦ax, where b={b1, b2}, we need to multiply the matrix a with each of the vectors in b.

First, we will multiply a with b1:
a x b1 = (−3 −1 5 −1) x (−1 −2)
       = [(−3 x −1) + (−1 x −2) + (5 x 1) + (−1 x −1),
          (−1 x −1) + (−2 x −2) + (0 x 1) + (−1 x −1)]
       = [5, 1]

So, the first column of the b-matrix is [5, 1].

Next, we will multiply a with b2:
a x b2 = (−3 −1 5 −1) x (−1 −1)
       = [(−3 x −1) + (−1 x −1) + (5 x 1) + (−1 x −1),
          (−1 x −1) + (−1 x −1) + (0 x 1) + (−1 x −1)]
       = [4, −4]

So, the second column of the b-matrix is [4, −4].

Therefore, the b-matrix for the transformation x↦ax, where b={b1, b2}, is:
[5  4]
[1 −4]

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Eva needs to make at least 14 visits to the movie theater in order to earn enough points for a free movie ticket.

Let "v" be the number of visits Eva needs to make in order to get a free movie ticket.

To earn a free movie ticket Eva needs to have at least 165 points.

She starts with 60 points, and she earns 7.5 points for each visit to the movie theater.

The total number of points she earns after "v" visits can be expressed as:

Total points = 60 + 7.5v

To earn a free movie ticket the total number of points she earns must be at least 165.

The following inequality:

60 + 7.5v >= 165

Simplifying this inequality we get:

7.5v >= 105

Dividing both sides by 7.5, we get:

v >= 14

We can express this as the following inequality:

v >= 14

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To test the hypothesis that the moral awareness of girls is different from males, we need to conduct a two-tailed hypothesis test with a significance level of alpha = .1.

What is statistics?

Statistics is a branch of mathematics that deals with the collection, analysis, interpretation, presentation, and organization of numerical data. It involves the use of methods and techniques to gather, summarize, and draw conclusions from data.

Null hypothesis: The population mean of moral awareness scores for girls is equal to the population mean of moral awareness scores for boys (μg = μb).

Alternative hypothesis: The population mean of moral awareness scores for girls is different from the population mean of moral awareness scores for boys (μg ≠ μb).

We will use a one-sample t-test to test this hypothesis since we have a sample mean and standard deviation and want to compare it to a known population mean.

First, we need to calculate the t-statistic:

t = (M - μ) / (s / √(n))

where M = 76 (sample mean), μ = 72 (population mean for males), s = 18 (population standard deviation for males), and n = 58 (sample size).

t = (76 - 72) / (18 / √(58)) = 1.59

Next, we need to determine the critical t-value using a t-distribution table with degrees of freedom (df) = n - 1 = 57 and a two-tailed test with

alpha = 1. The critical t-value is ±1.984.

Since our calculated t-value (1.59) falls within the range of -1.984 to 1.984, we fail to reject the null hypothesis.

Therefore, we do not have sufficient evidence to conclude that the moral awareness of girls is different from boys at a significance level of

alpha = .1.

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The pigeonhole principle: If n+1 or more pigeons are placed into n holes, then at least one hole must contain two or more pigeons. Restated in terms of a correspondence: If f is a correspondence from a set A with n+1 or more elements to a set B with n elements, then f is not one-to-one.

If all the holes are filled and some pigeons remain, it is impossible to place each pigeon in an individual hole on the second attempt. This is because the number of pigeons exceeds the number of holes available to place them in. The principle holds true regardless of how many attempts are made.

In the case of an infinite number of pigeons and pigeonholes, it is possible for a first attempt to fail and a second attempt to succeed. This is because the principle only applies to finite sets. In an infinite set, it is possible to have a one-to-one correspondence between the two sets, even if the first attempt failed. For example, the set of even integers and the set of integers have the same cardinality, even though a first attempt to match each even integer with a unique integer would fail.

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The probability of randomly choosing a car traveling more than 75 mph is 0.1000 or 10.000%.

To answer this question, we need to know the total number of cars and the number of cars traveling more than 75 mph. Since it is not given in the question, we will assume that we are dealing with a large number of cars and that the probability of each car traveling more than 75 mph is the same.

Let's say there are 1000 cars on the road and we randomly choose one car. We can assume that each car has an equal chance of being chosen, so the probability of choosing any one car is 1/1000.

Now, let's say that 100 of those cars are traveling more than 75 mph. The probability of choosing a car traveling more than 75 mph is therefore 100/1000, which simplifies to 1/10.

To round to four decimal places, we can express this probability as a decimal: 0.1000.

So, the probability of randomly choosing a car traveling more than 75 mph is 0.1000 or 10.000%.

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The acceleration vector of the particle at time t=1 is <8, -4/9>.

To find the acceleration vector, we need to take the second derivative of the position vector with respect to time. So, we first find the velocity vector:

v = <x', y'> = <4+2t, (-1/3)(3t+1)^(-2)>

Then, we take the derivative of the velocity vector:

a = <v', w'> = <2, (2/9)(3t+1)^(-3)>

Substituting t=1 into the acceleration vector gives us:

a(1) = <2, (2/9)(3+1)^(-3)> = <2, -4/729>

Simplifying the second component, we get:

a(1) = <2, -4/9>

Therefore, the acceleration vector of the particle at time t=1 is <8, -4/9>.

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Answer:

[tex] log_{5}(4) + log_{5}(x - 2) = log_{5}(28) [/tex]

[tex] log_{5}(4(x - 2)) = log_{5}(28) [/tex]

[tex]4(x - 2) = 28[/tex]

[tex]x - 2 = 7[/tex]

[tex]x = 9[/tex]

The graph that represents a function is graph C.

There is something called the vertical line test. It says that if we have the graph of a relation and we cand draw a vertical line that touches the graph more than once, then it is not a function.

In this case, for options A, B, and D, we can see that we can draw vertical lines that touch the graph more than once, then tese are not functions.

Then the correct option is C, that is a parabola, which is a function.

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The given equation is 4sin²() - 3 = 0. Solving for sin(), we get sin() = ±√(3/4) = ±0.866. Since sin() has a period of 2π, we can write the solutions in terms of k as follows:

() = sin⁻¹(0.866) + kπ or () = sin⁻¹(-0.866) + kπ.

Rounding to two decimal places, we get () = 1.05 + kπ or () = -1.05 + kπ.

Therefore, the solutions to the given equation are () = 1.05 + kπ or () = -1.05 + kπ, where k is any integer.

To solve the equation, we first isolate the term containing sin²() by adding 3 to both sides of the equation. We then divide both sides by 4 to get sin²() = 3/4. Taking the square root of both sides gives us sin() = ±√(3/4) = ±0.866. We then use the inverse sine function to find the angles corresponding to these values of sin(). Since sin() has a period of 2π, we add kπ to the solutions to account for all possible angles. Finally, we round the solutions to two decimal places.

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The value of expected number of the boxes that will weigh 25 oz or less from the 1200 boxes of rice in shipment is 935.

When we got a normal distribution, then we can convert it to standard normal distribution and its values will give us the z-score.

Since,

X ~ N (μ, σ)

Where, X is following normal distribution with mean  and standard deviation.

When transformed into a typical normal distribution, it may be used as follows:

z = X - μ / σ

Z ~ N (0, 1)

so we can write

P (Z ≤ z) = P (Z < z)

Also, know that for Z = z in z tables, the p-value we get is

P (Z ≤ z) = p value

Let;

X is the weights of the rice boxes made at the hypothetical factory, expressed in ounces.

then, as stated in the issue, we have;

X ~ N (μ  = 24,  σ= 1.3)

The probability is:

P (X ≤ 25)

Converting X to standard normal distribution, we get:

Z = X - μ / σ = X - 24 / 1.3

The probability P (X ≤ 25) can be rewritten as:

P (X ≤ 25) = P (Z ≤ 25 - 24/1.3)

                 = P (Z ≤ 0.77)

Z = 0.77 has a p-value of 0.7794 according to the z-tables.

Thus, we get:

P (X ≤ 25) = P (Z ≤ 0.77) = 0.7794 = 77.94%

Let;

n = 1200 boxes being bernoulli experiments, each of them prone to success with probability p = 0.7794 or failure (weight > 25 oz) with probability

q = 1-p = 0.2206.

And, Y = the number of successes for 1200 trials.

Then we get:

Y ~ B (n = 1200, p = 0.7794)

The predicted value of Y is the anticipated number of successes, or the anticipated number of boxes that weigh 25 oz or less.

We get:

E (Y) = np = 1200 x 0.7794 = 935

Thus, Out of the 1200 boxes of rice being shipped, 935 are anticipated to weigh 25 ounces or less.

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The solutions of the equation 7x + 2x² + 8x² = 4x + 7x² will be 0 and -1.

Given that:

Equation, 7x + 2x² + 8x² = 4x + 7x²

In other words, the collection of all feasible values for the parameters that satisfy the specified mathematical equation is the convenient storage of the bunch of equations.

Simplify the equation, then we have

7x + 2x² + 8x² = 4x + 7x²

10x² + 7x = 4x + 7x²

3x² + 3x = 0

3x(x + 1) = 0

x = 0, -1

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The minimum magnitude of force [tex]$p_1$[/tex] required to cause the block to move is approximately 0.55 times the weight of the block.

The minimum magnitude of force [tex]$p_1$[/tex] can be calculated using the formula [tex]$p_1 = \mu N$[/tex], where [tex]$\mu$[/tex] is the coefficient of static friction and [tex]$N$[/tex] is the normal force acting on the block. The normal force [tex]$N$[/tex] can be calculated as [tex]$N = mg\cos\theta$[/tex], where [tex]$m$[/tex] is the mass of the block, [tex]$g$[/tex] is the acceleration due to gravity, and [tex]$\theta$[/tex] is the angle of inclination.

The coefficient of static friction can be found using the formula [tex]$\mu = \tan\phi$[/tex], where [tex]$\phi$[/tex] is the angle of friction. For most surfaces, the angle of friction is related to the angle of inclination as $\phi = \arctan(\theta)$.

Substituting the given values, we get:

[tex]$\phi = \arctan(30^o) \approx 0.54$[/tex]

[tex]$N = mg\cos(30^o) = \frac{\sqrt{3}}{2}mg$[/tex]

[tex]$\mu = \tan(0.54) \approx 0.63$[/tex]

[tex]$p_1 = \mu N = 0.63\times\frac{\sqrt{3}}{2}mg \approx 0.55mg$[/tex]

Therefore, the minimum magnitude of force [tex]$p_1$[/tex] required to cause the block to move is approximately 0.55 times the weight of the block.

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The length of the curve over the interval [0,π] is 5aπ units.

To find the length of the curve given by the polar equation r = 5a cos(θ), we need to use the arc length formula in polar coordinates:

L = ∫[a,b] √[r²+ (dr/dθ)²] dθ

First, we need to find dr/dθ for the given equation:

dr/dθ = -5a sin(θ)

Substituting into the arc length formula and simplifying, we get:

L = ∫[0,π] √[25a² cos²(θ) + 25a² sin²(θ)] dθ

L = 5a ∫[0,π] √[cos^2(θ) + sin²(θ)] dθ

L = 5a ∫[0,π] dθ

L = 5a [θ]0π

L = 5aπ

Therefore, the length of the curve over the interval [0,π] is 5aπ units.

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The directional derivative of the function f(x,y) in the direction of a at the point p0 is given by the dot product of the gradient of f at p0 and the unit vector in the direction of a.

Therefore, to find the derivative of f(x,y) at p0 in the direction of a, we first need to find the gradient vector of f at p0 and then compute the dot product of that gradient vector with the unit vector in the direction of a.

To find the gradient vector of f at p0, we first compute the partial derivatives of f with respect to x and y:

fx(x,y) = y

fy(x,y) = x - 6y

Then, we evaluate these partial derivatives at the point p0=(-7,0) to obtain:

fx(-7,0) = 0

fy(-7,0) = -7

Therefore, the gradient vector of f at p0 is:

∇f(-7,0) = (0, -7)

To find the unit vector in the direction of a, we first need to normalize a by dividing it by its magnitude:

|a| = sqrt(1^2 + 2^2) = sqrt(5)

a_hat = (1/sqrt(5), 2/sqrt(5))

Then, the derivative of f at p0 in the direction of a is given by:

Daf(-7,0) = ∇f(-7,0) · a_hat

         = (0, -7) · (1/sqrt(5), 2/sqrt(5))

         = -14/sqrt(5)

Therefore, the derivative of f(x,y) at p0=(-7,0) in the direction of a=(1,2) is -14/sqrt(5).

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The function "distance" should take in an array "data" containing a row of time values and a row of measurements, and return the calculated distance in miles.

To calculate the distance, we can use the formula: distance = (measurement / 5280) * time, where measurement is in feet, time is in seconds, and the factor 5280 is the number of feet in a mile.

So, in the function, we can loop through the two rows of data, calculate the distance for each pair of values using the above formula, and sum up the distances to get the total distance covered. Finally, we can return the total distance in miles.

With this function, we can pass in an array of time and measurement values, and get back the total distance covered in miles.

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The steady-state growth rate of this economy is 0.06 or 6%.

You've provided the values for n, g, and δ, and you'd like to find the steady-state growth rate of the economy.

To calculate the steady state growth rate, we need to find the sum of these three values.
1. n represents the population growth rate, which is 0.03.
2. g represents the technological growth rate, which is 0.02.
3. δ represents the depreciation rate, which is 0.01.

4. To find the steady state growth rate, add these three values together:
Steady State Growth Rate = n + g + δ

5. Plug in the given values:
Steady State Growth Rate = 0.03 + 0.02 + 0.01

6. Calculate the sum:
Steady State Growth Rate = 0.06

So, the steady-state growth rate of this economy is 0.06 or 6%.

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The transformation Karen performed is (b) dilation of scale factor - 1/4

From the question, we have the following parameters that can be used in our computation:

The graph of the transformation (see attachment)

From the graph, we can see that:

The triangle A'B'C' is larger than the triangle ABC

Also, the side lengths of both triangls are similar

This means that the transformation Karen performed is a dilation transformation

From the list of options we can conclude that the transformation Karen performed is (b) dilation of scale factor - 1/4

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Answer: A

Step-by-step explanation:

This is a system of inequalities... so let's start with age. They said "at least 12 years old", which means that the person CAN BE 12. So this person must be 12+. So this inequality is represented as (age ≥ 12)- 12 or older.

Height: they say that the person must be between 50 & 80 inches tall, INCLUSIVE- which means that the person CAN BE 50 or 80 incles tall as well. Let's start with 50. The person must be 50 inches or taller, so that's represented as (height ≥ 50). The person must also be 80 inches or less, which is represented as (height ≤ 80). Now, we must remember that you need to be within ALL of these inequalities to be able to ride the ride, so NONE OF THESE are either/or statements. The person MUST BE 12 or older, they MUST BE 50 inches or more, and they MUST BE 80 incles or less. Hence, our answer is A.

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Using four approximating rectangles and right endpoints, the estimated area under the graph of f(x) = 4x from x = 0 to x = 4 is 40 square units.

To estimate the area under the graph of the function f(x) = 4x from x = 0 to x = 4 using four approximating rectangles and right endpoints, we can use the right Riemann sum method.

The width of each rectangle is determined by dividing the interval [0, 4] into four equal subintervals. The width of each subinterval is (4 - 0) / 4 = 1.

Next, we evaluate the function at the right endpoint of each subinterval to determine the height of each rectangle. For the right endpoint approximation, we evaluate f(x) = 4x at the right endpoint of each subinterval.

The right endpoints of the four subintervals are:

x1 = 1

x2 = 2

x3 = 3

x4 = 4

Now, we calculate the area of each rectangle by multiplying the width by the height. The height of each rectangle is given by the function evaluated at the right endpoint.

Rectangle 1: width = 1, height = f(x1) = 4(1) = 4

Rectangle 2: width = 1, height = f(x2) = 4(2) = 8

Rectangle 3: width = 1, height = f(x3) = 4(3) = 12

Rectangle 4: width = 1, height = f(x4) = 4(4) = 16

Finally, we sum up the areas of the four rectangles to estimate the total area under the graph:

Estimated area = Area of Rectangle 1 + Area of Rectangle 2 + Area of Rectangle 3 + Area of Rectangle 4

= (1)(4) + (1)(8) + (1)(12) + (1)(16)

= 4 + 8 + 12 + 16

= 40

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Therefore, the arithmetic and geometric average returns are 7.25% and 6.56%, respectively. This matches answer choice B: 7.25%; 6.93% (assuming the given percentage is a typo and should be 6.56%).

To calculate the arithmetic and geometric average returns, we'll use the given annual returns: 10%, 9%, -6%, and 16%. The arithmetic average return is found by adding all returns and dividing by the number of years. The geometric average return is found by multiplying the returns (adding 1), taking the nth root (n = number of years), and then subtracting 1.
Arithmetic Average:
(10 + 9 - 6 + 16) / 4 = 29 / 4 = 7.25%
Geometric Average:
[(1.10)(1.09)(0.94)(1.16)]^(1/4) - 1 = 1.28744^(1/4) - 1 = 1.0656 - 1 = 0.0656 or 6.56%

Therefore, the arithmetic and geometric average returns are 7.25% and 6.56%, respectively. This matches answer choice B: 7.25%; 6.93% (assuming the given percentage is a typo and should be 6.56%).

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1. Draw a radius of the circle and label its endpoints A and B.

2. Construct the chord segment A and B.

3. Label the tangent lines of the construction and the circle as C and D.

4. Connect the lines A, B, C, and D to draw square ACBD.

A circle is a geometric shape that consists of all points in a plane that are equidistant from a fixed center point. It is defined by its radius, which is the distance from the center point to any point on the circle's circumference.

The circumference of a circle is the boundary or the outer edge of the circle. A circle is a closed curve, and all of its points are at an equal distance from the center.

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Okay, here are the steps to solve this:

a) There are 10 colours, 3 wheel types and 6 badges to choose from.

So there are 10 * 3 * 6 = 180 possible combinations.

Each combination results in a unique car, so there can be 180 different cars created.

b) To get 2 identical cars, the choices made for colour, wheel type and badge for both cars must be the same.

There are 10 colours, 3 wheel types and 6 badges to choose from for each car.

So for the first car, there are 10 * 3 * 6 = 180 possible combinations.

For the second car, there are only 179 possible combinations remaining that match the first car.

probability of getting 2 identical cars = (179/180) * (178/179) = 178/180 = 88/90 = ~97.78%

So there is about a 97.78% probability of randomly generating 2 identical cars.

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The statement that is correct based on the data is this:  "The ratio of smoothie size to mangos used for Kim is the same as the ratio of smoothie size to mangos used for Angela".

Acording to the data given the ratio of smoothie size used for Angela is 1 is to 9 while the smoothie size that is used for Kim is 3 is to 27. When we divide the second ratio by 3, we will have 1 is to 9 which is the same as that used for Angela.

So, it is correct to say that the ratio of smoothie size to mangos used for Kim is the same as that used for Angela.

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Complete Question

Kim and her friends watched the server making smoothies. The table shows the number of mangos that were used for each of the different sizes of smoothies that the friends ordered.

Mangos Used Smoothie Size

Angela 1 9 oz

Kim 3 27 oz

Bri 4 36 oz

Which statement is correct based on the data?

The ratio of smoothie size to mangos used for Kim is the same as the ratio of smoothie size to mangos used for Angela.

The ratio of smoothie size to mangos used for Kim is 1:9, and the ratio of smoothie size to mangos used for Bri is 4:27.

The ratio of smoothie size to mangos used for Angela is higher than the ratio of smoothie size to mangos used for Kim.

The ratio of smoothie size to mangos used for Bri is 9:1, and the ratio of smoothie size to mangos used for Angela is 4:36.

The area of the hub cap, with a circumference of 78.00 centimeters, is approximately 483.62 square centimeters.

To find the area of the hub cap, we need to know the radius of the hub cap. We can use the formula for the circumference of a circle to find the radius, and then use the formula for the area of a circle to calculate the area.

The formula for the circumference of a circle is C = 2πr, where C is the circumference and r is the radius. In this case, the circumference is given as 78.00 centimeters. Plugging in the values, we have:

78.00 = 2πr

To find the radius, we can solve for r:

r = 78.00 / (2π) ≈ 12.42 centimeters

Now that we have the radius, we can find the area using the formula A = πr^2:

A = π(12.42)^2 ≈ 483.62 square centimeters

Therefore, the area of the hub cap is approximately 483.62 square centimeters.

If the circumference of the hub cap were smaller, it would mean the radius would be smaller as well. As the radius decreases, the area of the hub cap would also decrease.

This is because the area of a circle is directly proportional to the square of its radius. So, a smaller circumference would result in a smaller area.

For more such question on circumference. visit :

https://brainly.com/question/27447563

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