When a fixed bridge is created, there must be at least_______of the bridge

The numerical values of the areas, we would need to evaluate these integrals. However, without a specific context or requirement for the area calculation, it is not possible to provide an exact numerical answer in this format.

To find the area inside the larger loop and outside the smaller loop of the limaçon with the polar equation r = (1/2)cos(θ), we need to determine the range of θ values that correspond to the loops.

The equation r = (1/2)cos(θ) describes a cardioid with a loop. The loop occurs when cos(θ) = 0, which happens when θ = π/2 and θ = 3π/2.

The larger loop is traced when θ ranges from 0 to π/2, while the smaller loop is traced when θ ranges from π/2 to 3π/2.

To calculate the areas, we integrate the formula for the area enclosed by a polar curve:

A = (1/2) ∫[θ1,θ2] r^2 dθ

For the larger loop, the area is:

A1 = (1/2) ∫[0,π/2] [(1/2)cos(θ)]^2 dθ

For the smaller loop, the area is:

A2 = (1/2) ∫[π/2,3π/2] [(1/2)cos(θ)]^2 dθ.

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The Volume of Composed figure is 6336 m³.

We have,

Base Area of Cube = 144 square meter

So, Side of base = √144 = 12 m

Now, slant height of Pyramid = 10 m

So, height of pyramid = √10² - (12/2)²

= √100 - 36

= √64

= 8 m

Then, Volume of Composed figure

= Volume of cube + Volume of Pyramid

= l³ + 1/2 x base area x height

=  1728 + 1/2 x 144 x 64

= 1728 + 4608

= 6336 m³

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a. Approximately 60% of steel plates have elongation greater than 25%.

b. The mean elongation of the steel plates is 26%.

a. To find the proportion of steel plates with elongation greater than 25%, we need to calculate the area under the probability density function (PDF) curve for x > 25. The given PDF, f(x), is defined as x/250 for 20 < x < 30 and 0 otherwise. The area under the curve for x > 25 is the integral of f(x) from 25 to 30. Integrating x/250 from 25 to 30 gives us the proportion, which is approximately 60%.

b. The mean elongation can be calculated by finding the expected value of the random variable. We integrate x * f(x) over its entire range. Integrating x/250 from 20 to 30 and simplifying the expression gives us the mean elongation of 26%.

c. The cumulative distribution function (CDF) gives us the probability that the elongation is less than or equal to a given value. To find the CDF of the elongation, we integrate the PDF from 20 to a specific value of x. For 20 < x ≤ 30, the CDF can be expressed as the integral of x/250 from 20 to x. For x ≤ 20, the CDF is 0, and for x > 30, the CDF is 1.

d. The median is the value that divides the probability distribution into two equal halves. In other words, it is the value of x for which the CDF is 0.5. To find the median elongation, we solve the equation CDF(x) = 0.5, which corresponds to the integral of x/250 from 20 to the median value. By solving this equation, we can determine the median elongation value.

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The probabilities are : pr(a) = 0.5 , pr(b) = 0.25 , pr(c) = 0.125 , pr(d) = 0.25.

The probability of flipping a head first is 0.5 because there is a 50% chance of flipping heads on any given flip. The probability of flipping 2 heads is 0.25 because there are 4 possible outcomes (HHTT, HTHT, HTTH, THHT) and only 1 of them (HHTT) results in 2 heads. The probability of flipping 3 or more heads is 0.125 because there is only 1 possible outcome (HHHH) that results in 3 or more heads. The probability of the last 2 flips being tails is 0.25 because there are 4 possible outcomes (TTHH, THTH, HTTH, HHTT) and 1 of them (TTHH) results in the last 2 flips being tails. The following table summarizes the probabilities: pr(a) = 0.5 , pr(b) = 0.25 , pr(c) = 0.125 , pr(d) = 0.25.

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Step-by-step explanation:

Yes because 2 and 6 are congruent    

         they are corresponding angles of parallel lines cut by a transversal

To find a basis for the subspace W spanned by set S, we can perform Gaussian elimination on the matrix formed by the vectors in S. The basis vectors will be the non-zero rows in the reduced row-echelon form of the matrix.

a) s = [1 1 -2], [-1 -2 3], [1 0 -1], [2 -1 0]

Let's form a matrix using the given vectors:

```

[1  1  -2]

[-1 -2  3]

[1  0  -1]

[2 -1  0]

```

Perform Gaussian elimination to obtain the reduced row-echelon form:

```

[1  0  -1]

[0  1  -1]

[0  0  0]

[0  0  0]

```

The non-zero rows correspond to the basis vectors:

[1 0 -1] and [0 1 -1].

Therefore, the basis for W is {[1 0 -1], [0 1 -1]}.

The dimension of W (dim(W)) is equal to the number of basis vectors, which in this case is 2.

b) s = [1 2 -1 1], [3 1 1 2], [-1 1 -2 2], [0 -2 1 2]

Let's form a matrix using the given vectors:

```

[1  2 -1  1]

[3  1  1  2]

[-1 1 -2  2]

[0 -2  1  2]

```

Perform Gaussian elimination to obtain the reduced row-echelon form:

```

[1  0  1  0]

[0  1 -1  0]

[0  0  0  1]

[0  0  0  0]

```

The non-zero rows correspond to the basis vectors:

[1 0 1 0], [0 1 -1 0], and [0 0 0 1].

Therefore, the basis for W is {[1 0 1 0], [0 1 -1 0], [0 0 0 1]}.

The dimension of W (dim(W)) is equal to the number of basis vectors, which in this case is 3.

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The letter that completes the puzzle is X.

We have,

From the puzzle given,

We see that in each consecutive letter, there is a gap of four consecutive letters.

Now,

A to F

There are 4 consecutive letters in between.

i.e

B, C, D, and E.

F to K

There are 4 consecutive letters in between.

i.e

G, H, I, and J.

Similarly,

S, T, U, V W, and X.

So,

The letter that completes the puzzle is X.

Thus,

The letter that completes the puzzle is X.

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Answer:

y=-5x+3

Step-by-step explanation:

To start off, we can find the slope by getting 2 points on the line that is convenient. I found 2 points: (0,3) and (1,-2), and calculated the slope to get -5 (Slope: 3-(-2)/0-1 which is 5/-1=-5). Then, we need to find the y intercept which is c in this case. The point (0,3) already has the y intercept, so the equation is y=-5x+3.

The mean score is approximately 69.21.

To find the mean score, we need to follow these steps:

We start by adding up all the scores given:

71 + 67 + 67 + 72 + 76 + 72 + 73 + 68 + 72 + 72 + 72 + 67 + 71 + 68

We have a total of 14 scores in the given list.

Next, we divide the sum obtained in Step 1 by the total number of scores (Step 2):

(71 + 67 + 67 + 72 + 76 + 72 + 73 + 68 + 72 + 72 + 72 + 67 + 71 + 68) / 14

Now we perform the addition in the numerator:

= 969 / 14

Finally, we divide the numerator (969) by the denominator (14):

Mean score = 969 / 14 ≈ 69.21

Therefore, the mean score of the top ten finishers in the golf tournament is approximately 69.21.

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Complete Question:

The scores of the top ten finishers in a recent golf tournament are listed below. Find the mean score.

71, 67, 67, 72, 76, 72, 73, 68, 72, 72, 72, 67, 71, and 68

Answer:

  2j -4

Step-by-step explanation:

You want an expression that represents double Jason's points with 4 subtracted.

When j represents the points Jason scored, double that number is 2j. When 4 is subtracted from that result, the expression becomes ...

  2j -4

<95141404393>

The round of number 371,883 to two significant digits is 370,000.

What are significant figures?

In positional notation, significant figures are digits in a number that are trustworthy and required to denote the amount of something.

For example,

Number 0.00698 contained three significant digits.

Number 102.0094 contains seven significant digits.

As per question,

Number 371,883 contained six significant digits.

Now convert this number to two significant digits as follows:

Number 371,883 rounded to five significant digits is 371,880

Similarly, rounded to four significant digits is 371,800.

Similarly, rounded to three significant digits is 371,000.

and similarly, rounded to two significant digits is 370,000.

Hence, The round of number 371,883 to two significant digits is 370,000.

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The Borda count method is commonly used in situations where preferences or rankings need to be determined. Among the options provided, the organization that uses the Borda count method is:

d. the Toastmasters International Speech contests, to rank the top three competitors.

The Borda count method is often employed in competitions or contests where participants are ranked based on the preferences or votes of the judges or audience. In the case of Toastmasters International Speech contests, the Borda count method is used to calculate the overall rankings of the competitors by assigning points to each ranking position and summing them up. This allows for a fair and systematic determination of the top three performers based on the aggregated preferences of the judges or audience members.

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To find the area under the curve, you can evaluate the anti-derivative of the function and then apply the definite integral over the interval [2, 10].

To compute the area under the curve of the function f(x) = (x - 4)/(2x - 6x^2) cos(x) over the interval [2, 10], three different anti-derivatives were used by Mr. Sosa, Mrs. Perepelitsa, and Mr. Dougmay.

Since the specific anti-derivatives used by each person are not provided, it is not possible to determine the exact values they obtained for the area under the curve. However, if the anti-derivatives were calculated correctly, their results should be equal due to the Fundamental Theorem of Calculus.

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The water desalination plant can produce 7 gallons of water in 7 days.

To find the number of gallons the water desalination plant can produce in 7 days, we need to multiply the daily production rate by the number of days.

Given that the plant can produce 2.8 × 10^0 gallons of water in one day (which simplifies to 1 gallon), we can calculate the production in 7 days as follows:

Production in 7 days = (Production per day) × (Number of days)

= 1 gallon/day × 7 days

= 7 gallons

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A. F is conservative on R*. The potential function is φ(x,y) = [tex]2ln(4x^2 + 5y^2) + C.[/tex]

To determine if the given vector field F = (4x, 5y) / sqrt(4x^2 + 5y^2) is conservative on the open region R* of R^2 that does not include the origin, we need to check if it satisfies the conservative vector field criteria, which states that a vector field is conservative if and only if its curl is zero.

Let's find the curl of F:

∇ × F = (∂Q/∂x - ∂P/∂y)

Given [tex]F = (4x, 5y) / sqrt(4x^2 + 5y^2)[/tex], we can rewrite it as:

[tex]F = (4x / sqrt(4x^2 + 5y^2), 5y / sqrt(4x^2 + 5y^2))[/tex]

Now, let's calculate the partial derivatives:

∂P/∂y = 0

∂Q/∂x = 0

Since both partial derivatives are zero, the curl of F is zero, and therefore, F is conservative on the open region R*.

To find the potential function, we need to integrate the components of F. Integrating the first component with respect to x and the second component with respect to y will give us the potential function.

Let's integrate the first component:

∫P(x, y) dx = ∫([tex]4x / sqrt(4x^2 + 5y^2)[/tex]) dx

= [tex]2 \sqrt{(4x^2 + 5y^2)} + C1(y)[/tex]

Here, C1(y) is an arbitrary function of y.

Now, let's integrate the second component:

∫Q(x, y) dy = ∫[tex](5y / sqrt(4x^2 + 5y^2)[/tex]) dy

= [tex]2 \sqrt{(4x^2 + 5y^2)} + C2(x)[/tex]

Here, C2(x) is an arbitrary function of x.

The potential function, denoted as φ(x, y), is the sum of the integrated components:

φ(x, y) =  [tex]2\sqrt{(4x^2 + 5y^2) } + C1(y) + C2(x)[/tex]

Since C1(y) and C2(x) are arbitrary functions, we can combine them into a single arbitrary function C(y, x) = C1(y) + C2(x), where C is the arbitrary constant.

Therefore, the potential function is:

φ(x, y) = [tex]2 \sqrt{(4x^2 + 5y^2) } + C[/tex]

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The extreme values of the function f(x, y) on the circle x^2 + y^2 = 1 are as stated.

To find the extreme values of the function f(x, y) = xy + 2y^2 + x^4 − y^4 on the circle x^2 + y^2 = 1, we can use the method of Lagrange multipliers.

First, let's define the Lagrangian function L(x, y, λ) as:

L(x, y, λ) = xy + 2y^2 + x^4 − y^4 + λ(x^2 + y^2 - 1)

Taking the partial derivatives with respect to x, y, and λ, and setting them to zero, we can find the critical points:

∂L/∂x = y + 4x^3 + 2λx = 0 ...(1)

∂L/∂y = x + 4y - 4y^3 + 2λy = 0 ...(2)

∂L/∂λ = x^2 + y^2 - 1 = 0 ...(3)

Solving equations (1), (2), and (3) simultaneously will give us the critical points.

From equation (3), we have x^2 + y^2 = 1, which means the critical points lie on the given circle.

Substituting equation (3) into equations (1) and (2), we get:

y + 4x^3 + 2λx = 0 ...(4)

x + 4y - 4y^3 + 2λy = 0 ...(5)

From equations (4) and (5), we can solve for x and y in terms of λ. Solving these equations may involve solving a system of nonlinear equations.

Once we have the values of x and y, we can substitute them back into the function f(x, y) = xy + 2y^2 + x^4 − y^4 to find the corresponding values.

After evaluating f(x, y) at each critical point, we can determine the maximum and minimum values.

In this case, the maximum value is f(-√2/2, -√2/2) = f(√2/2, √2/2) = 3/2, and the minimum value is f(-√2/2, √2/2) = f(√2/2, -√2/2) = 1/2.

Therefore, the extreme values of the function f(x, y) on the circle x^2 + y^2 = 1 are as stated.

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The measure that would be used to describe the average class ranking of algebra students is the mean.

The mean is the arithmetic average of a set of numbers, and it is calculated by adding all the values in the set and dividing by the total number of values. In this case, if we have the class ranking of all algebra students, we can calculate the mean by adding all the rankings and dividing by the total number of students.

The mode is the value that appears most frequently in a set of numbers, and it may not be useful in describing the average class ranking, as there may be no or multiple modes.

The median is the middle value in a set of ordered numbers, and it may not accurately represent the average class ranking if the distribution of rankings is skewed.

The standard deviation is a measure of the spread or dispersion of a set of numbers around the mean, and it is not directly related to the calculation of the average class ranking. However, it can be useful in assessing the variability of rankings within the class.

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The surface area of the triangular prism is 81 square feet.

To find the surface area of the triangular prism

we need to calculate the area of each face and then sum them up.

Let's calculate the areas of each face:

Rectangular face 1: Length = 3 feet, Width = 6 feet

Area = Length × Width

= 3 feet × 6 feet = 18 square feet

Rectangular face 2

Area = Length × Width = 3 feet × 7.5 feet

= 22.5 square feet

Rectangular face 3:

Length = 3 feet, Width = 4.5 feet

Area = Length × Width = 3 feet × 4.5 feet

= 13.5 square feet

Triangular face 1: Base = 6 feet, Height = 4.5 feet

Area = (Base × Height) / 2

= (6 feet × 4.5 feet) / 2 = 13.5 square feet

Triangular face 2: Base = 6 feet, Height = 4.5 feet

Area = (Base × Height) / 2 = (6 feet × 4.5 feet) / 2 = 13.5 square feet

Total surface area = 18 square feet + 22.5 square feet + 13.5 square feet + 13.5 square feet + 13.5 square feet

= 81 square feet

Therefore, the surface area of the triangular prism is 81 square feet.

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What is the surface area of the triangular prism? a triangular prism. the rectangular sides are 3 feet by 6 feet, 3 feet by 7.5 feet, and 3 feet by 4.5 feet. the triangular sides have a base of 6 feet and height of 4.5 feet. [not drawn to scale] 54 square feet 67.5 square feet 81 square feet

The sum of the first 9 terms of the geometric sequence 75, 60, 48 is given as follows:

325.

A geometric sequence is a sequence of numbers where each term is obtained by multiplying the previous term by a fixed number called the common ratio q.

The formula for the sum of the first n terms is given as follows:

[tex]S_n = a_1\frac{q^n - 1}{q - 1}[/tex]

In which [tex]a_1[/tex] is the first term.

The parameters for this problem are given as follows:

[tex]a_1 = 75, q = 0.8, n = 9[/tex]

Hence the sum is given as follows:

[tex]S_9 = 75 \times \frac{0.8^9 - 1}{0.8 - 1}[/tex]

[tex]S_9 = 325[/tex]

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The figure depicts three graphs: two exponential functions and one linear function. The linear function intersects the y-axis at a specific value and passes through a given point. Similarly, the first exponential function has a y-intercept and intersects a particular point, while the second exponential function has its own y-intercept and passes through a distinct point.

The linear function, represented by the equation y = mx + b, intersects the y-axis at the y-coordinate b, and it passes through the point (x, y). The values of b and (x, y) are not provided in the question, so their specific values are missing.

The two exponential functions can be generally written as y = a * e^(kx), where a represents the initial value or y-intercept. The first exponential function has its y-intercept, but the specific value is not given. It also intersects a specific point, the coordinates of which are not provided.

Similarly, the second exponential function has its own y-intercept, but the specific value is not given. It passes through another point, but the coordinates of that point are also missing.

Without the specific values of the y-intercepts and points of intersection, it is not possible to provide further details or draw the graphs accurately.

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The improper integral of cot(x) converges, and its value is given by ln|sin(x)| + C.

To determine whether the improper integral of cot(x) converges or diverges, we need to evaluate the integral over an interval where the function is not defined or approaches infinity.

The integral of cot(x) is given by ∫cot(x)dx. The function cot(x) is not defined at x = kπ, where k is an integer, as it corresponds to vertical asymptotes. However, the integral can still converge if the function approaches infinity slowly enough as it approaches these points.

In the case of cot(x), the function approaches infinity as x approaches kπ, but it does so at a slower rate compared to other functions like 1/x. As a result, the improper integral of cot(x) converges.

To evaluate the integral, we can use techniques such as trigonometric identities or integration by parts. The integral of cot(x) is equal to ln|sin(x)| + C, where C is the constant of integration.

In summary, the improper integral of cot(x) converges, and its value is given by ln|sin(x)| + C.

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Answer:

The answer is Giechung: equation

Step-by-step Explanation:

equation consist of a dependent variable and independent variable

3x=10+5

3x=15

3x/3=15/3

x=5

(a)  The nearest whole number, the amount of production in 2012 is approximately 522 million barrels.

(b)  The nearest whole number, the amount of production in 2021 is approximately 451 million barrels.

To find the amount of crude oil production in 2012, we need to substitute t = 4 into the given function f(t) = 365(1.0927)^t.

(a) Amount of production in 2012:

f(4) = 365(1.0927)^4

≈ 365(1.429014559)

≈ 521.9600592

Rounded to the nearest whole number, the amount of production in 2012 is approximately 522 million barrels.

To find the amount of production in 2021, we need to substitute t = 13 into the function.

(b) Amount of production in 2021:

f(13) = 365(1.0927)^13

≈ 365(1.234840919)

≈ 450.8156506

Rounded to the nearest whole number, the amount of production in 2021 is approximately 451 million barrels.

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The correct answer is (d) adding. The overall chi-square test statistic is a measure of the overall association between two categorical variables in a contingency table. It is calculated by adding all of the cell chi-square values together.

The cell chi-square values are calculated by comparing the observed frequencies in each cell of the contingency table to the expected frequencies under the assumption of independence between the two variables. The chi-square test is commonly used in statistical analysis to determine whether there is a significant association between two variables, and the resulting test statistic is compared to a critical value from a chi-square distribution to determine statistical significance. Overall, the chi-square test is a powerful tool for analyzing categorical data and can provide valuable insights into the relationships between different variables. I can also add that the chi-square test is widely used in various fields such as social sciences, healthcare, marketing, and many more. It is a useful tool for identifying patterns and associations in large datasets and making data-driven decisions.

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(a) The diameter of the cylinder bore when the engine operates at 119.0°C can be calculated using the thermal expansion coefficient of aluminum and the initial diameter at 20.00°C.

(a) To calculate the diameter of the bore at 119.0°C, we need to consider the thermal expansion of aluminum. The formula for linear thermal expansion is ΔL = αLΔT, where ΔL is the change in length, α is the linear coefficient of thermal expansion, L is the initial length, and ΔT is the change in temperature. Since we are dealing with the diameter, which is twice the length, we can write the formula as ΔD = 2αDLΔT.

Given the initial diameter D = 96.00mm and the change in temperature ΔT = (119.0°C - 20.00°C), we can calculate the change in diameter ΔD. Adding ΔD to the initial diameter will give us the diameter at 119.0°C.

(b) To find the temperature at which the diameter of the hole is equal to 95.85mm, we can rearrange the formula for thermal expansion as ΔT = ΔD / (2αDL).

Substituting the values of ΔD = (95.85mm - 96.00mm) and D = 96.00mm, and solving for ΔT, we can determine the change in temperature. Adding the change in temperature to the initial temperature of 20.00°C will give us the temperature at which the diameter of the hole is equal to 95.85mm.

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To result in no main effect for factor B, the missing mean should be 30.

In a two-factor experiment, a main effect refers to the overall effect of one factor on the dependent variable, disregarding the other factor. In this case, factor B has two levels (B1 and B2), and the given data provide the means for each level of factor B. To have no main effect for factor B, the means for B1 and B2 should be equal.

From the given data:

B1: 20

B2: 10

To have no main effect, the means should be equal, which means the missing mean should be the average of the given means:

(20 + 10) / 2 = 30

Therefore, if the missing mean is 30, there would be no main effect for factor B in this two-factor experiment.

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Answer:

  7360 ft·lb

Step-by-step explanation:

You want the work done by a 320-lb gorilla climbing to a height of 23 feet.

Work is the product of force and distance:

  W = (weight)·(height) = (320 lb)(23 ft) = 7360 ft·lb

The gorilla does 7360 ft·lb of work.

__

Additional comment

Time comes into play when you want the power involved. If the climbing is done in 10 seconds, the power required is about 1.34 horsepower. (1 hp = 550 ft·lb/s)

<95141404393>

The calculated values of the function f(x) = { 2 x − 1 x < 0 2 x − 2 x ≥0}   f(x)={2x-1x<02x-2x≥0} are:

a) f(3) = 4.

b) f(-2) = -5.

c) f(0) = -2.

To calculate the requested values of the function f(x), we need to substitute the given values of x into the function.

a) f(3):

Since 3 is greater than or equal to 0, we use the second part of the function:

f(3) = 2(3) - 2 = 6 - 2 = 4.

b) f(-2):

Since -2 is less than 0, we use the first part of the function:

f(-2) = 2(-2) - 1 = -4 - 1 = -5.

c) f(0):

Since 0 is equal to 0, it satisfies both conditions, but we will use the second part of the function:

f(0) = 2(0) - 2 = -2.

Therefore, the values are f(3) = 4, f(-2) = -5, f(0) = -2.

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The area of the region bounded by the graphs of x = y2 - 2 and x = y - 2 on the interval [-2, -1] is:

Based on the options provided, the closest approximation is: 0.15 sq units

To find the area of the region bounded by the graphs of the given equations on the interval [-2, -1], we need to calculate the definite integral of the difference of the two equations over that interval.

Let's proceed with the calculation:

First, let's find the points of intersection between the curves x = y² - 2 and x = y - 2.

Setting the equations equal to each other:

y² - 2 = y - 2

Rearranging the equation:

y² - y = 0

Factoring out y:

y(y - 1) = 0

This equation gives us two solutions: y = 0 and y = 1.

Now, we need to integrate the difference of the two equations over the interval [-2, -1] to find the area:

Area = ∫[-2, -1] (f(x) - g(x)) dx

Here, f(x) = y² - 2 and g(x) = y - 2.

To express the equations in terms of x, we solve for y:

From the first equation:

x = y² - 2

y² = x + 2

y = ±√(x + 2)

From the second equation: x = y - 2

y = x + 2

Now, let's calculate the area:

Area = ∫[-2, -1] ((√(x + 2)) - (x + 2)) dx

Evaluating this integral will give us the area of the region bounded by the two curves on the given interval.

This integral does not have a simple closed-form solution and requires numerical methods for evaluation.

Using numerical methods like the trapezoidal rule or Simpson's rule, we can approximate the area.

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