QUESTION 4 Suppose that three coins are flipped simulatneously and that the random variable x is the number of heads showing once they've landed. What is P(X=2)? Give your answer to three decimal places.

The mean, median, standard deviation and variance of the following data set is 5.1911.

The variance is then determined using the formula: variance = Sum (each data point - mean)² / number of data points.

The mean, median, standard deviation and variance of the following data set 36 33 30 28 35 25 34 37 are as follows:

Mean= the sum of values / the number of values.

Mean = (36+33+30+28+35+25+34+37) / 8 = 28.75.

Median = the middle value when the data is ordered in ascending or descending order.

Median = 33

Standard deviation is defined as the square root of the variance. It measures how much data is spread around the mean.

Standard Deviation = √(variance).

To calculate variance, we must first find the mean of the data.

The variance is then determined using the formula:

variance = Sum (each data point - mean)² / number of data points. Standard deviation is found by taking the square root of the variance. Variance =

[ (36-28.75)² + (33-28.75)² + (30-28.75)² + (28-28.75)² + (35-28.75)² + (25-28.75)² + (34-28.75)² + (37-28.75)² ] / 8

= 26.9375

Standard Deviation

= √Variance

=√26.9375=5.1911.

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Answer:

A. 5

Step-by-step explanation:

x=5

Answer:

A

Step-by-step explanation:

Thier equal so 78-18=60

60/12=5

The chart should be completed as follows;

x           [tex]f(x) = 1.7^x[/tex]               function (x, f(x))               Inverse (f(x), x)

0               1                             (0, 1)                                 (1, 0)

1                1.7                          (1, 1.7)                               (1.7, 1)

-1               0.6                         (-1, 0.6)                            (0.6, -1)

2                2.9                          (2, 2.9)                           (2.9, 2)

3                4.9                          (3, 4.9)                            (4.9, 3)

In Mathematics and Geometry, an exponential function can be modeled by using this mathematical equation:

[tex]f(x) = a(b)^x[/tex]

Where:

Based on the given exponential function [tex]f(x) = 1.7^x[/tex], we would determine the value of f(x) by substituting each of the x-values as follows;

x = 1

[tex]f(x) = 1.7^1[/tex]

f(x) = 1.7

When x = -1, we have:

[tex]f(x) = 1.7^{-1}[/tex]

f(x) = 0.6

When x = 2, we have:

[tex]f(x) = 1.7^{2}[/tex]

f(x) = 2.9

When x = 3, we have:

[tex]f(x) = 1.7^{3}[/tex]

f(x) = 4.9

In conclusion, the inverse of this exponential function would be determined by interchanging (swapping) the x-value (x) and the y-value f(x) as shown in the chart above.

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The mean for the sample is $92 and the standard deviation is $8. To construct an 88% confidence interval for the population mean, we need to calculate the margin of error (EBM) and use the z-score corresponding to the desired confidence level.

To identify the mean and standard deviation for the sample, we are given that X follows a normal distribution with a mean of $92 and a standard deviation of $8.

To construct an 88% confidence interval for the population mean, we follow these steps:

1. Determine the critical value, z, using the desired confidence level. In this case, the confidence level is 88%, so we need to find the z-score that corresponds to an 88% confidence level.

2. Calculate the margin of error (EBM) using the formula EBM = z * (standard deviation / sqrt(sample size)).

3. Determine the lower and upper bounds of the confidence interval by subtracting and adding the margin of error from the sample mean.

To find the mean and standard deviation for the sample, we are given:

Mean (μ) = $92

Standard deviation (σ) = $8

To construct an 88% confidence interval, we need to find the critical value z. Using a standard normal distribution table or a calculator, the critical value corresponding to an 88% confidence level is approximately 1.553.

Next, we calculate the margin of error (EBM):

EBM = z * (standard deviation / sqrt(sample size))

EBM = 1.553 * ($8 / sqrt(49))

EBM ≈ $2.235

The lower bound of the confidence interval is the sample mean minus the margin of error:

Lower bound = $92 - $2.235 ≈ $89.765

The upper bound of the confidence interval is the sample mean plus the margin of error:

Upper bound = $92 + $2.235 ≈ $94.235

Therefore, the 88% confidence interval for the population mean is approximately $89.765 to $94.235.

Using the calculator to construct the confidence interval for a 92% confidence level with the same mean ($92) and standard deviation ($8), we find that the interval is approximately $90.587 to $93.413.

To find the minimum number of participants needed to be 95% confident that the estimated sample mean is within two dollars of the true population mean, we can use the formula:

Sample size (n) = (z * standard deviation / margin of error)^2

Substituting the values into the formula:

n = (1.96 * $8 / $2)^2

n ≈ 153.76

Therefore, the minimum number of participants needed is approximately 154 to be 95% confident that the estimated sample mean is within two dollars of the true population mean.

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Shyam has elected to contribute four percent of his $40,000 compensation, which is equal to (4/100)*$40,000 = $1,600. This amount will be deducted from his salary and contributed to his SIMPLE § 401(k) plan.

His employer will contribute three percent of his $40,000 compensation, which is equal to (3/100)*$40,000 = $1,200. This amount is in addition to Shyam's contribution and will be directly deposited into his SIMPLE § 401(k) account.

The total contribution to Shyam's SIMPLE § 401(k) plan will be the sum of his and his employer's contributions, which is equal to $1,600 + $1,200 = $2,800.

However, not all of this amount will vest immediately. Vesting refers to the process by which an employee becomes entitled to employer contributions made to their retirement plan.

For example, if the vesting schedule is 20% per year, Shyam will be entitled to 20% of his employer's contributions after the first year, 40% after the second year, and so on until he is fully vested after five years.

Without knowledge of Shyam's employer's specific vesting schedule, it is impossible to determine how much of the total contribution will vest immediately. Therefore, the answer to the third blank is unknown.

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The statement "If A is a set, then |P(A)| is strictly larger than A" is false.

The power set P(A) of a set A is defined as the set of all subsets of A, including the empty set and A itself. The cardinality of a set A, denoted as |A|, represents the number of elements in A.

In general, the cardinality of the power set P(A) is larger than the cardinality of A, which means |P(A)| > |A|. This holds true for both finite and countable sets A. However, when A is already uncountable (such as the set of real numbers), the statement |P(A)| = |A| is true.

Therefore, the correct answer is option d. False. The statement is false because it claims that |A| # |P(A)|, implying that the cardinality of A is not equal to the cardinality of P(A).

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The number of students who take only lunch or dinner but not both is 50

Since Venn diagram is used to visually represent the differences and the similarities between two concepts.

Given that all 70 students take lunch or dinner or both meals at the hostel.

students take lunch or dinner or both meals at the hostel = 70

lunch = 30

dinner= 50

Students who both or any one of the drinks= 900-125=725

Now number of students who take only lunch or dinner but not both

= 50 - 30

= 20

Then 20 + 30 = 50

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The correct answer is E. The "marginal" GPA for this semester will be above the semester GPA from last semester but below the current cumulative GPA, leaving open the possibility that the cumulative GPA could increase or decrease.

To understand why the answer is E, we need to consider how cumulative GPA is calculated. Cumulative GPA is the average of all grades earned throughout a student's academic career. Each course grade is multiplied by the number of credits for the course to obtain grade points, and then the sum of all grade points is divided by the sum of all credits. So, if a student earns higher grades in courses with more credits, those grades will have a greater impact on their cumulative GPA.

In this scenario, the student's semester GPA from last semester was 1.70, which means they earned an average of C- in their courses. This lowered their cumulative GPA to 2.83. However, if they earn a semester GPA of 2.20 this semester, they will earn an average of C+. This is higher than their GPA from last semester, which means their "marginal" GPA for this semester is higher than their previous semester GPA.

However, their "marginal" GPA for this semester is still below their current cumulative GPA of 2.83. This means that even if they earn all A's this semester, their cumulative GPA will not reach 3.0. Therefore, it is possible that their cumulative GPA will increase if they earn grades that are high enough to offset the impact of the grades from last semester, but it is also possible that their cumulative GPA will decrease if they earn grades that are not high enough to offset the impact of the grades from last semester. Hence, the correct answer is E

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Answer:

112x − 168y

Step-by-step explanation:

First you want to apply the distributive property −14(−8x+12y)  -14 x -8 = 112x, -14 x 12y = 168 y then you want to turn it into a equation to get 112 x -168y

A reasonable prediction for the number of times a pink paper clip will be drawn is approximately 18 times.

We have,

To make a reasonable prediction for the number of times a pink paper clip will be drawn, we can assume that each paper clip has an equal probability of being drawn since the paper clip is replaced after each draw.

The total number of paper clips in the bag is:

= 9 + 7 + 5 + 4

= 25.

Since the probability of drawing a pink paper clip is 9/25, we can expect that the number of times a pink paper clip will be drawn can be estimated as follows:

Number of times a pink paper clip will be drawn.

= (probability of drawing a pink paper clip) x (total number of draws)

Number of times a pink paper clip will be drawn = (9/25) x 50

Number of times a pink paper clip will be drawn ≈ 18

Therefore,

A reasonable prediction for the number of times a pink paper clip will be drawn is approximately 18 times.

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The domain of the function f(x, y) = √(y - x²) / (36 - x²) is x ≠ ±6 and y ≥ x².

Based on the analysis provided, let's summarize the domain of the function f(x, y) = √(y - x²) / (36 - x²):

Step 1: Rule out points where the denominator equals zero and negative values in the square root.

Step 2: The denominator equals zero when x² = 36. Therefore, we must have x ≠ ±6.

Step 3: The numerator √(y - x²) is defined only when y - x² ≥ 0. Therefore, we must have y ≥ x².

Step 4: Combining the above, we determine that the domain of the given function is as follows:

Domain:

x ≠ ±6 (excluding x = ±6)

y ≥ x² (y is greater than or equal to the square of x)

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In a graph with n vertices, the longest possible walk is achieved by traversing all n vertices without revisiting any vertex. This type of walk is known as a Hamiltonian path.

A Hamiltonian path visits each vertex exactly once, ensuring that it covers the entire graph. The length of the longest possible walk in a graph with n vertices is (n-1) since there are n-1 edges connecting the n vertices in a path.

It is important to note that not all graphs have Hamiltonian paths. The existence of a Hamiltonian path depends on the specific connectivity and structure of the graph.

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Equations 1 and 3 correctly represent the total when three consecutive numbers are added together and then multiplied by three, while equations 2 and 4 do not.

To determine which equations represent the total when three consecutive numbers are added together and then multiplied by three, let's analyze each equation:

Total = 3x + 3x + 1 + 3x + 2

This equation correctly represents the total. Adding three consecutive numbers (3x, 3x + 1, 3x + 2) gives the sum of 9x + 3, and then multiplying it by three yields 27x + 9.

Total = 3x + 3+ + 3 + 3r + 6

This equation is not correct. The expression "3+" is ambiguous and does not represent a specific value.

Total = 3r + 3(r + 1) + 3(«+2)

This equation correctly represents the total. Expanding the expressions within parentheses gives 3r + 3r + 3 + 3 + 6 = 6r + 12.

Total = r + r + 3 + y + 6

This equation is not correct. It introduces a variable "y" which is not defined and is unrelated to the three consecutive numbers.

In conclusion, equations 1 and 3 correctly represent the total when three consecutive numbers are added together and then multiplied by three. These equations are:

Total = 3x + 3x + 1 + 3x + 2

Total = 3r + 3(r + 1) + 3(«+2)

Therefore, the equation would be Total = 3x + 3x + 1 + 3x + 2

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The vector product x×(x×y) is orthogonal to x and y. Therefore, the correct answer is C.

To understand why the result is orthogonal to x and y, we need to use the vector triple product identity, which states that x×(y×z) = y(x·z) - z(x·y). Applying this identity to the vector product x×(x×y), we get:

x×(x×y) = x(x·y) - y(x·x)

Since x·x is equal to the length of x squared and is therefore positive, the second term y(x·x) is also positive. This means that the vector x×(x×y) points in the opposite direction to y. Similarly, the first term x(x·y) is positive, which means that x×(x×y) is also orthogonal to x. Therefore, the correct answer is C.

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There will be 30 trucks when there are 5 cars, maintaining the 1:6 ratio.

Given that the ratio of cars to trucks is 1:6, we can determine the number of trucks by multiplying the number of cars by the ratio. If there are 5 cars, we can calculate the number of trucks using the ratio.

Let's assume the number of trucks as "x." According to the given ratio, we have the equation:

1 car : 6 trucks = 5 cars : x trucks

To solve for x, we can set up a proportion:

1/6 = 5/x

Cross-multiplying, we get:

1 * x = 6 * 5

x = 30

Therefore, there will be 30 trucks when there are 5 cars, based on the given ratio of 1:6.

Alternatively, we can calculate the number of trucks by dividing the number of cars by the fraction representing the ratio:

Number of trucks = (Number of cars) / (Ratio of cars to trucks)

Number of trucks = 5 / (1/6)

Number of trucks = 5 * (6/1)

Number of trucks = 30

So, there will be 30 trucks when there are 5 cars, maintaining the 1:6 ratio.

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The correct answer is:

Subtract r from both sides of the equation.

To solve the equation h = ab + r for a, Raymond's first step should be to isolate the variable a by performing the necessary operations.

To do this, he should choose option A, which is to subtract r from both sides of the equation. This step helps in isolating the term containing the variable a on one side of the equation.

By subtracting r from both sides, the equation becomes:

h - r = ab

Now, the term containing a is alone on one side of the equation, while the constant terms (h and r) are on the other side.

After completing this step, Raymond can proceed to further manipulate the equation to solve for a. But his first step should be to subtract r from both sides.

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The lemonade that roseanne's brother drink is  1/2  liter

To find out how much lemonade Roseanne's brother consumes, we need to calculate the fraction of the remaining lemonade that he consumes.

Initially, Roseanne makes 1 1/2 liters of strawberry lemonade.

She pours 1/4 of a liter into a thermos, which leaves her with (1 1/2) - (1/4) = 1 1/4 liters of lemonade.

Her brother then consume 2/5 of the remaining lemonade.

To find out how much lemonade he consume, we can multiply the fraction by the total amount remaining:

Lemonade consumed by brother = (2/5) * (1 1/4)

To simplify the calculation, we can convert the mixed number (1 1/4) to an improper fraction:

1 1/4 = (4/4) + (1/4) = 5/4

Substituting this value back into the equation:

Lemonade consumed by brother = (2/5) * (5/4) = 10/20 = 1/2

Therefore, Roseanne's brother consume 1/2 of a liter of lemonade.

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Set A's intersection with the union of sets B and A is equivalent to set A's intersection with set B.

As a result, the supplied assertion is correct.

The given statement is true and can be proven using set theory. Let A and B be two sets. Then, the intersection of A and the union of B and A is the same as the intersection of A and B. This can be demonstrated as follows:

An(BUA) = {x : x∈A and x∈B or x∈A}

= {x : (x∈A and x∈B) or x∈A}

= {x : x∈A and x∈B} U {x : x∈A}

= ANB U A

Thus, we can see that the intersection of set A with the union of set B and A is equal to the intersection of set A with set B.

Therefore, the given statement is true.

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The area of the shaded part is 463.4π cm²

The area of a shape is the space occupied by the boundary of a plane figures like circles, rectangles, and triangles.

The area of the shaded part = area of circle - area of segment.

Area of circle = πr²

= 3.14 × 24²

= 576π cm²

Area of segment = area of sector - area of triangle

Area of sector = 120/360 × 576π

=576π/3

= 192πcm²

Area of triangle = 1/2absinC

= 1/2 × 24² sin120

= 249.42

= 79.4π cm²

Area of segment = 192π- 79.4π

= 112.6π

Area of the shaded part = 576π -112.6π

= 463.4 π

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The equation for the quadratic relationship graphed below is  y=−(5/9)​x2−(10/9)​x^2+1.

We are given that;

The graph of the equation

Now,

Substituting these values into the equation for a quadratic function:

y=a(0)2+b(0)+c

1=c

So we know that c=1

Next, we can use the vertex form of a quadratic function to find the value of a:

y=a(x−h)2+k

where (h,k) is the vertex of the parabola. Substituting (-1,-2) for (h,k):

y=a(x+1)2−2

Now we need to find the value of a. We can use the point (2,-3) on the parabola to solve for a:

−3=a(2+1)2−2

−3=9a−2

a=−95​

Therefore, by quadratic equation the answer will be y=−(5/9)​x2−(10/9)​x^2+1.

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Using Lagrange multipliers, we set up a system of equations involving the objective function and the constraint function and solve for the critical points.

To find the extremum of the function f(x, y) = x^2 - 6xy^2 - 14y + 47 subject to the constraint xy = 14, we can use the method of Lagrange multipliers. The method involves introducing a new variable, called the Lagrange multiplier, and setting up a system of equations to find the critical points of the function subject to the constraint.

Let's denote the Lagrange multiplier by λ. The objective function and the constraint function are:

Objective function: f(x, y) = x^2 - 6xy^2 - 14y + 47

Constraint function: g(x, y) = xy - 14

We set up the following system of equations:

∇f(x, y) = λ ∇g(x, y)

g(x, y) = 0

To find the partial derivatives of f(x, y) and g(x, y), we have:

∂f/∂x = 2x - 6y^2

∂f/∂y = -12xy - 14

∂g/∂x = y

∂g/∂y = x

Setting up the equations, we have:

2x - 6y^2 = λy

-12xy - 14 = λx

xy - 14 = 0

From the third equation, we get xy = 14. Substituting this into the second equation, we have:

-12(14/y) - 14 = λx

-168/y - 14 = λx

-14(12/y + 1) = λx

-168 - 14y = λxy

Substituting xy = 14, we obtain:

-168 - 14y = 14λ

Simplifying, we get:

14y + 14λ = -168

Dividing by 14, we have:

y + λ = -12

From the first equation, we have:

2x - 6y^2 = λy

2x - 6(y^2 + 2y + 1) = λ(y + 2)

2x - 6y^2 - 12y - 6 = λy + 2λ

2x - 6y^2 - (12 + λ)y - (6 + 2λ) = 0

Substituting xy = 14, we have:

2x - 6(14/x)^2 - (12 + λ)(14/x) - (6 + 2λ) = 0

Simplifying, we obtain:

2x - (588/x^2) - (168 + 14λ)/x - (6 + 2λ) = 0

Multiplying through by x^2, we get:

2x^3 - 588 - (168 + 14λ)x - (6 + 2λ)x^2 = 0

This equation, along with the equation y + λ = -12, forms a system of equations that can be solved to find the values of x, y, and λ.

Unfortunately, solving this system of equations analytically can be quite complex and may require numerical methods. However, once the values of x, y, and λ are determined, you can substitute them back into the objective function f(x, y) to obtain the extremum.

In summary, the solution involves finding the values of x, y, and λ that satisfy the equations.

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Without more information about the figure and the charges present, it is not possible to determine the magnitude and direction of the force acting on the charge at x = 11.0 cm.

To calculate the force on a charge located at a specific position, we need to consider the interaction with other charges in the vicinity. However, since the figure and additional information are not provided, we are unable to determine the specific configuration and nature of the charges involved. The force on a charge depends on factors such as the distance, charge magnitude, and the nature of the interaction (e.g., electrostatic or gravitational). Therefore, without more information about the figure and the charges present, it is not possible to determine the magnitude and direction of the force acting on the charge at x = 11.0 cm.

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The values of x for which the series converges can be expressed as the entire real number line, or in interval notation, (-∞, +∞).

To determine the values of x for which the series converges, we need to analyze the given series:

∑ (x - 1)^n / (5^n)

Let's break down the problem step by step.

First, let's consider the ratio test, which is a useful tool for determining the convergence of a series. The ratio test states that if the absolute value of the ratio of consecutive terms approaches a limit L as n approaches infinity, then the series converges if L < 1 and diverges if L > 1.

Using the ratio test, let's calculate the ratio of consecutive terms:

| [(x - 1)^(n+1) / (5^(n+1))] / [(x - 1)^n / (5^n)] |

= | (x - 1)^(n+1) / (5^(n+1)) * (5^n) / (x - 1)^n |

= | (x - 1)^(n+1) / (5(x - 1))^n |

We simplify further:

= | (x - 1) / (5(x - 1)) |^n

= | 1/5 |^n

Now, we can see that the ratio does not depend on x. It simplifies to a constant value of 1/5. Since the absolute value of this constant is less than 1 (i.e., |1/5| < 1), the series will converge for all values of x.

In other words, the series converges for any value of x.

Therefore, the values of x for which the series converges can be expressed as the entire real number line, or in interval notation, (-∞, +∞).

In summary, the given series, ∑ (x - 1)^n / (5^n), converges for all values of x. This conclusion is reached by applying the ratio test, which shows that the ratio of consecutive terms is a constant value of 1/5, which is less than 1. As a result, the series converges for any real value of x.

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The basic feasible solutions are the extreme points of the feasible region, and the algorithm moves from one basic feasible solution to another by pivoting.

The simplex method is a systematic method of solving linear programming problems.

The algorithm is iterative and works by testing each vertex of the feasible solution space in turn to determine the optimal solution.

The simplex method terminates when it has determined that no further improvements to the objective function are possible. The simplex method has the advantage of being easy to understand and apply to problems of any size, although it can be slow for very large problems. In the simplex method, the feasible region is divided into polyhedral cones, and the objective function is optimized at the extreme point of each of these cones.

In summary, the main answer is that the simplex method is an algorithm for solving linear programming problems by testing each vertex of the feasible solution space to determine the optimal solution.

Hence, The basic feasible solutions are the extreme points of the feasible region, and the algorithm moves from one basic feasible solution to another by pivoting.

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The value of C(-1) is -5 found for the given value of the function.

Functions: Functions are a collection of ordered pairs, where the first element of each pair is from the domain, and the second element is from the range. Functions help to model real-world problems or situations.

It takes one or more input values and produces a single output value.Functions can be represented using different methods such as equations, tables, and graphs.

In mathematics, a function can be represented by a graph, where the input value is plotted on the x-axis, and the output value is plotted on the y-axis.

A function can also be represented using a table, where each row represents an input value and the corresponding output value.

In economics, functions are used to model the relationship between inputs and outputs, such as the relationship between supply and demand.

Given function is C(x) = −4x² + 4x +3

The value of C(x) is to be calculated at x = -1.

So, C(-1) = -4(-1)² + 4(-1) + 3

C(-1) = -4 + (-4) + 3

= -5.

Hence, the value of C(-1) is -5.

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Triangle GHJ and triangle LKM are similar because they possess identical proportions, despite probable size variations

We need to know the properties of similar triangles.

These properties includes;

This characteristic of the property enables the derivation of diverse relationships and theorems in the field of geometry that involve triangles with identical shapes.

We can see that Triangle GHJ and triangle LKM are similar.

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Using the concept of proportion and ratio, the number of minutes is 6125

Proportion is a mathematical comparison between two numbers.  According to proportion, if two sets of given numbers are increasing or decreasing in the same ratio, then the ratios are said to be directly proportional to each other.

Using the concept of proportion and ratio, we can predict how many minutes it will take them.

13 students = 637 minutes

125 students = x minutes

cross multiply both sides

13 * x = 637 * 125

13x = 79625

Divide both sides by the coefficient of x

13x / 13 = 79625

x = 6125

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Answer:

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The Baileys' monthly cost is approximately $682.

The phrase "the addition" refers to combining two or more numbers. Adding two numbers is indicated by the plus sign (+), therefore adding three is written as three plus three. Additionally, the number of times the plus symbol (+) is used is up to you. For example, 3 + 3 + 3 + 3.

To calculate the Baileys' monthly costs, we need to add up all of their annual costs and divide by 12 to get the monthly cost.

Total Annual Cost for the Baileys = $800 + $300 + $300 + $2,000 + $1,500 + $2,080 + $1,200 = $8,180

Monthly Cost for the Baileys = $8,180 / 12 = $681.67 (rounded to the nearest dollar)

Therefore, the Baileys' monthly cost is approximately $682.

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The complete question is

Part A Now It's your turn to play real-estate advisor! Help two familles-the Baileys and the Smiths-figure out which house they can need to calculate their monthly costs. Round to the nearest dollar. The Baileys' Monthly Costs Type of Cost Annual Cost Monthly Cost electricity $800 trash removal $300 water $300 heating costs $2,000 homeowners insurance $1,500 taxes $2,080 HOA fees $1,200 The Baileys' Monthly Costs is?