What should be added to -7/3 to get 3/7




21/58
58/21
47/21
50/21​

Answer:70 i think srry if its wrong

Step-by-step explanation:

This shows that the number of quarts she should you buy to stain the wheelchair ramp is 9 quart

This the sum of all the area of the surfaces. The given figures is made of 3 rectangles and 2 triangles

Determine the surface area

TSA = (25*25) + (2 * 5*301/12) + (5*2.08333)

TSa = 625 + 258.33333 + 10.41665

TSA = 893.74995

If a quart of stain covers 100 square feet, the total nuber to buy is given as:

Number to buy = 894/100 = 8.94

This shows that the number of quarts she should you buy to stain the wheelchair ramp is 9 quart

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Answer:

Translate (5,0)

Translate (0,4)

Step-by-step explanation:

Translate to the right five spaces, then translate downward four spaces

We need more information for this to be answered.

Noticed how it forms a supplementary angle.

A supplmentary angle is basically two angles that added up to 180 degrees.

So we have:

64 + x = 180

Then we solve for "x", so "x" = 116.

Hope that makes sense :)

a. When evaluating a model, we use R2 as a parameter for performance assessment.

b. If model A has a higher MAPE but model B has a higher R2, we choose the model with the higher R2 for better overall performance.

c. For accuracy measures, we typically use MAPE (Mean Absolute Percentage Error) due to its interpretability and ability to capture relative errors.

When evaluating a model's performance, it is crucial to choose the appropriate parameters to assess its accuracy and reliability. In the case of MAPE (Mean Absolute Percentage Error) and R2 (Coefficient of Determination), the choice between them depends on the specific evaluation goals.

The R2 parameter is commonly used for evaluating models because it measures the proportion of the dependent variable's variance that can be explained by the independent variables. R2 provides insights into how well the model fits the data and captures the relationship between the input features and the target variable. Therefore, R2 is a suitable parameter to use when evaluating a model.

When comparing two models, if model A has a higher MAPE but model B has a higher R2, it is advisable to choose the model with the higher R2 value. This is because R2 indicates the proportion of variance explained, suggesting that model B performs better in capturing the underlying patterns and predicting the target variable.

Although model A may have a lower relative error (MAPE), it is crucial to prioritize the model's ability to explain and predict the target variable accurately.

Among MAPE, MAD (Mean Absolute Deviation), and MSD (Mean Squared Deviation), MAPE is commonly preferred as a parameter for accuracy measures. MAPE calculates the average percentage difference between the predicted and actual values, making it interpretable and easily understandable.

It captures relative errors and enables comparisons across different scales and datasets. MAD and MSD, on the other hand, measure absolute and squared errors, respectively, but they do not account for the relative magnitude of the errors. Hence, MAPE is a more suitable parameter for accuracy measures.

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A decrease of 316 gallons is represented as -316, and -948 : 3 = -316 represents the problem.

Given that a pump runs for 3 hours, removing an equal number of gallons of water each hour, and after 3 hours, the water in the koi pond has decreased by 948 gallons, and Ken says the water in the pond decreased by 316 gallons each hour, to determine which statement best explains why Ken is correct, the following calculation must be performed:

Therefore, a decrease of 316 gallons is represented as -316, and -948 : 3 = -316 represents the problem.

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Answer:

$8.55 per lunch box

Step-by-step explanation:

Because the boxed lunches all cost the same, we can take the total ($247.95) and divide it between the 29 lunches equally.

\(247.95 \div 29 = 8.55\)

The correct answer is b) 0.

To evaluate the line integral of h(x, y) over the given circle, we can use the parameterization of the circle in terms of the angle θ, where x = cos θ and y = sin θ. Substituting these values into h(x, y) = yi + xj, we obtain h(θ) = sin θ i + cos θ j. Then, we can compute the line integral using the formula:

∫h(x, y) ds = ∫h(θ) ||r'(θ)|| dθ

where r(θ) = cos θ i + sin θ j is the parameterization of the circle and ||r'(θ)|| = 1 is the magnitude of its derivative. Therefore, the line integral simplifies to:

∫h(x, y) ds = ∫0^2π (sin θ i + cos θ j) dθ

Integrating the x-component and y-component separately, we get:

∫h(x, y) ds = [-cos θ]0^2π + [sin θ]0^2π = 0

Thus, the line integral of h(x, y) over the given circle is 0. This means that the work done by the vector field h(x, y) as it moves along the circle is zero, which indicates that the vector field is conservative. In other words, h(x, y) can be expressed as the gradient of a scalar potential function.

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Solution :

Let the revenue be = R

Therefore, R = price x quantity

                  R = (30 - 2x) ( 5000 + 500x)

                     = \(150000 + 5000x - 1000x^2\)

For the maximum revenue,

\($\frac{dR}{dx} = 0$\)

\($-2000x+5000=0$\)

\($x=2.5$\)

\($\frac{d^2R}{dx^2}=-2000<0$\)

At \(x=2.5\), the revenue is maximum.

So the price for the maximum company revenue = \($30-2x$\)

                                                                                  \($=30-2(2.5)$\)

                                                                                  = 30 - 5

                                                                                  = 25

Therefore, the price that will maximize the company's revenue is $25.

Answer:

Use the diffrence of cubes formula

Step-by-step explanation:

a^3-b^3=(a-b)(a^2+ab+b^2) where a = 1 and b = 2m

m^2(1-2m)(1+2m+4m^2)

Answer:

B

Step-by-step explanation:

The volume of any prism whose height is perpendicular to the base is

V = B * h

The base can be anything, even a 17 sided figure. As long as the base has an area that can be found, and the height is perpendicular to it, the volume can be calculated.

Answer:

How is volume calculated for a triangular prism?

Multiply the area of the triangular base by the prism’s height.

Answer:

A ≈ 113.0 ft²

Step-by-step explanation:

the area (A) of a circle is calculated as

A = πr² ( r is the radius )

  = 3.14 × 6²

  = 3.14 × 36

  ≈ 113.0 ft² ( to the nearest tenth )

Answer:

113.0 ft^2

Step-by-step explanation:

The area of a circle is found by

A = pi r^2, where r is the radius and pi = 3.14

A = 3.14 * ( 6)^2

A = 3.14 ( 36)

A = 113.04

Rounding to the nearest tenth

A = 113.0

In the east town hatchery, around (d) 95% of the fish will have z-scores between 2 and -2.

A z-score is a measure of how far a specific point is away from the mean in terms of standard deviations. A z-score of 2 means that the point is 2 standard deviations above the mean, while a z-score of -2 means that the point is 2 standard deviations below the mean.

In this case, the mean length of a baby sunfish is 2.2 inches and the standard deviation is 0.6 inches. Therefore, a z-score of 2 means that the fish is 2 * 0.6 = 1.2 inches above the mean, while a z-score of -2 means that the fish is 2 * 0.6 = 1.2 inches below the mean.

The 68-95-99.7 rule tells us that approximately:

68% of the fish will have z-scores between -1 and 1.

95% of the fish will have z-scores between -2 and 2.

99.7% of the fish will have z-scores between -3 and 3.

Therefore, approximately (d) 95% of the fish in the east town hatchery will have z-scores between 2 and -2.

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Answer:

10

Step-by-step explanation:

Answer:

9.) B

10.) B

11.) C

12.) D

13.) D

14.) B

HOPE IT'S HELP

HAVE A NICE DAY AND NIGHT

Answer:

There are a total of 2500 cups

Step-by-step explanation:

10% of the cups are green

you can set up a equation for this

x = total cups

.10x = 250

multiply both sides by 10 to make x a whole number

x = 2500

The sampling method used by the candy company is biased.

This sampling method is considered biased. The reason is that by only checking the first 10 and the last 10 candies produced each hour, the company is not taking into account any possible variations that may occur during the entire production process. The candies in the middle of the production line may have different characteristics or flaws that are not being accounted for in the sample. This method may lead to unrepresentative results, as it doesn't accurately capture the overall quality of the candies produced. To obtain an unbiased sample, the company should consider a more random sampling method, such as selecting candies at different intervals throughout the production process.

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The book that weighs 3/4 pounds is greater than 1/2 pounds.

To compare the weights of the two books with 1/2 pound, we need to convert 1/2 pound into a fraction with a common denominator as the given weights. The common denominator of 8 and 4 is 8. So, we can convert 1/2 pound to 4/8 pound.

Now we can compare the weights of the two books with 4/8 pounds. The weight of the first book is 3/8 pounds, which is less than 4/8 pounds. The weight of the second book is 3/4 pounds, which is greater than 4/8 pounds.

Therefore, the book that weighs 3/4 pounds is greater than 1/2 pound.

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Answer:

(0,5),(2,6) these are the coordinates of the line.

Step-by-step explanation:

I hope this helps.

Answer:

It's 398

Step-by-step explanation.

Diameter of 8.

height of 12.

8 - .75 - .75= 6.5

6.5/2 = 3.25

3.25 x 3.25 x 12 x 3.14 = 397.995

round to the nearest whole number and you get

398

Take the diameter (8) an subtract is by both sides of the walls (0.75 each wall) that gives you 6.5. Take that 6.5 and half that, because you need to have the radius to solve volume problems, giving you 3.25.  Then multiply 3.25 by 3.25 together ( I know it seems redundant but it just works easier this way) This gives you 10.5625. After that take 10.5625 then multiply it into 12, being the height, which gives you 126.75. Finally take 126.75 and multiply that into 3.14 (pie) giving you the answer.

The approximate inside volume of the pipe is 398 cubic inches.

We must use the Volume formula for a right Cylinder to calculate the approximate Inside Volume of the pipe, which is described below:

\(V = \pi \cdot (r-t)^{2}\cdot h\) (1)

Where:

\(V\) - Inside volume, in cubic inches.

\(r\) - Radius of the iron pipe, in inches.

\(t\) - Wall thickness of the iron pipe, in inches.

\(h\) - Height of the cylinder, in inches.

If we know that \(r = 4\,in\), \(t = 0.75\,in\) and \(h = 12\,in\), then the approximate inside volume of the pipe:

\(V = \pi\cdot (4\,in-0.75\,in)^{2}\cdot (12\,in)\)

\(V \approx 398.197\,in^{3}\)

The approximate inside volume of the pipe is 398 cubic inches.

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The value of x , y and z in the parallel line is 50 degrees.

When parallel lines are crossed by a transversal line, angle relationships are formed such as vertically opposite angles, alternate interior angles, alternate exterior angles, adjacent angles, corresponding angles etc.

Therefore, let's use the angle relationships to find the angle, x, y and z as follows:

Therefore,

x = 360 - 310(sum of angles in a point)

x = 50 degrees

Therefore,

x = y(alternate interior angles)

Alternate interior angles are congruent.

Hence,

y = 50 degrees

Therefore,

x = z(alternate interior angles)

z = 50 degrees.

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Answer:

19 square units

Step-by-step explanation:

There are a LOT of different ways to solve this problem, most of which involve breaking up the shape into smaller shapes.  For me, it’s easier to draw a rectangle around the figure, find that area, and then subtract the four areas not in the figure.

Rectangle: would be from -3 to 3 (6) and -2 to 4 (6).  6x6=36

The four missing triangles:

AB = 1/2(3)(2)=3

BC = 1/2(2)(4)=4

CD = 1/2(2)(4)=4

DA = 1/2(4)(3)=6

6+4+4+3=17

36-17=19

Without any further information or clarification on the angle or its context, it is not possible to provide a specific numerical value for cos 28728°.

The trigonometric function cosine (cos) is defined as the ratio of the adjacent side to the hypotenuse in a right triangle. However, the given angle of 28728° is not within the range of standard angles typically used in trigonometry (0° to 360°). As such, we cannot directly compute the cosine of this angle using traditional trigonometric methods.

It is worth noting that 28728° is an extremely large angle, far beyond the usual range of angles encountered in mathematics and real-world applications. In this case, it is possible that the angle was specified incorrectly or there was a typographical error.

If there is additional information or if the angle is corrected or rephrased within a valid range, I would be happy to help you compute the cosine or provide any other relevant information.

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Answer:

The population changed by 20% in 3 years

Step-by-step explanation:

The percentage change, is given by the following equation;

\(Percentage \ change = \dfrac{Final \ value - Initial \value }{Initial \ value} \times 100\)

The given parameters are;

The initial population of the town = 35,000

The final population of the town = 42,000

The percentage change in the population is therefore;

\(Percentage \ change \ in \ population= \dfrac{42,000 - 35,000 }{35,000} \times 100 = 20 \%\)

The population changed (increase) by 20% in 3 years.

The steps that should be followed to create a copy of cab are listed below in the correct order. Mark a point X. Use a straightedge to draw a ray with endpoint X.

Place the compass point at X and draw an arc intersecting the ray. Mark the point Y at the intersection. Without changing the setting, place the compass point at Y and draw an arc. Label the point Z where the two arcs intersect.

Use a straightedge to draw XZ. Place the compass point at A. Draw an arc that intersects both rays of ZA. Label the points of intersection B and C. Place the compass point at C and open the compass to the distance between B and C. The above-mentioned steps should be followed in the given order to create a copy of cab.

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The process to create a replication of the cab includes marking a point x, drawing rays, drawing arcs with a compass, and repeating this process with several different points. The steps are done in a sequential, specific order.

To create a copy of the cab, the steps would be rearranged in this order:

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