Ratio and Proportion problem
Please help meh​

Answer:

The surface area of the rectangular pyramid is 488.95 in^2. Rounded to one decimal place, the answer is 457.4 in^2. So the answer is B) 457.4 in^2.

Step-by-step explanation:

To find the surface area of the rectangular pyramid, we need to add up the areas of all five faces.

First, we can find the area of the rectangular base, which is 13 inches by 17 inches:

Area of base = length x width = 13 in x 17 in = 221 in^2

Next, we can find the areas of the four triangular faces. The two larger triangular faces are congruent and have a base of 17 inches and a height of 11 inches:

Area of larger triangular face = (1/2) x base x height = (1/2) x 17 in x 11 in = 93.5 in^2

So the combined area of the two larger triangular faces is:

Area of larger triangular faces = 2 x 93.5 in^2 = 187 in^2

The smaller triangular face has a base of 13 inches and a height of 12.3 inches:

Area of smaller triangular face = (1/2) x base x height = (1/2) x 13 in x 12.3 in = 79.95 in^2

Finally, to find the total surface area, we add up the area of the base and the areas of all four triangular faces:

Total surface area = Area of base + Area of larger triangular faces + Area of smaller triangular face

Total surface area = 221 in^2 + 187 in^2 + 79.95 in^2

Total surface area = 488.95 in^2

Therefore, the surface area of the rectangular pyramid is 488.95 in^2. Rounded to one decimal place, the answer is 457.4 in^2. So the answer is B) 457.4 in^2.

The given statement is true all else being equal, the further the t statistic falls from 0, either in the positive or negative direction, the more likely it is that the difference between two population averages is statistically significant.  

The T Statistic is used in a T test when you are deciding if you should support or reject the null hypothesis. It’s very similar to a Z-score and you use it in the same way: find a cut off point, find your t score, and compare the two. You use the t statistic when you have a small sample size, or if you don’t know the population standard deviation.

Here we have the statement All else being equal, the further the t statistic falls from 0, either in the positive or negative direction, the more likely it is that the difference between two population averages is statistically significant.

And we need to identify whether the statement is true or not.

As per the definition of t statistics, we have identified that the t statistic falls from 0. which states that is goes on the negative direction.

Hence, the more likely it is that the difference between two population averages is statistically significant.

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Answer:

c can stand for any number

Step-by-step explanation:

C stands for any number because both sides of the equation have the same math problem so c is equal to any natural number.

HOPE THIS HELPED

Answer:

equation has infinite solutions

Step-by-step explanation:

Given

2c + 3 = 2c + 3

Since the terms on both sides are the same, then any real value of x is a solution to the equation, that is

The equation has infinite solutions

The slope of the original line of the graph sis found to be 1 and the slope of perpendicular line is -1.

One of the line shown in the graph is passing through the points (0, -7) and (7, 0). Now we have to recall that the slope M of the line L passing from points (a, b) and (c, d) is given as,

M = (d-b)/(c-a)

Also, if the line L is perpendicular to line l, then the slope m of the line l will be given as,

m = -1/M.

So, now the slope of line L is,

M = (0-(-7))/(7-0)

M = 7/7

M = 1

Now, the slope of the perpendicular line l is,

m = -1/1

m = -1.

Hence, the slope of the perpendicular line and original lines are -1 and 1.

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Answer:

14.85

Step-by-step explanation:

P₁V₁ = P₂V₂

13 x 8 = P₂ x 7

P₂ = (13 x 8)/7

  = 104/7

P₂ = 14.85 atm

Step-by-step explanation:

Option a is the correct answer

(2x+1)+(4x+5)+(3x+4)

2x+1+4x+5+3x+4

9x+10

Answer:

below

Step-by-step explanation:

3*1/10 = 30/10 = 3

3 * 10 = 30

As you can see, 3 is less than 30.

Best of Luck!

The expression 3x1/10 is less than 3x10 because, 1-tenth is less than 10.

According to the question;

In essence, since 3 is common to both expressions;

Ultimately, since 1/10 is less than 10; we can conclude that 3×1/10 is less than 3×10.

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Answer:

B.

Egypt’s economy prospered with increased trade and public works projects.

Step-by-step explanation:

pls make me brainliest

Answer:

B.  Egypt’s economy prospered with increased trade and public works projects.

Step-by-step explanation:

i did the test

"It's pouring if the grass is wet." Our inverse sentence would be, "If it is NOT raining, then it is NOT wet on the grass."

Given,

Inverse Sentence;

Each of the original statements is presupposed to be false in an inverted statement. "If it is not snowing" would be the polar opposite of "If it is snowing." "Then it is not chilly" would be the polar opposite of "then it is cold."

Example of inverse sentence;

Now, we can construct the three other statements using the concepts we established before. If anything, we would say the opposite: "If the grass is wet, it's pouring." "If it is NOT raining, then the grass is NOT wet," would be our inverse claim.

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Answer:

Step-by-step explanation:

Given that the winners vote is represented by w

and that the opponents vote is represented by x

the question states that "The winner of an election received 1 more than 3 times as many votes as his opponent received"

Translated to mathematical expression we have

w=3(x+1)

w=3x+3

therefore the equation to find the number of votes his opponent received is known is

w=3x+3

Developers determine the specifics of how to build a system in the design phase. b

The design phase and its importance:
Define Objectives:

The design phase begins after the completion of the analysis phase, where developers have gathered and evaluated requirements.

The main objective of the design phase is to create a blueprint for the system that addresses all identified requirements.
Create Architectural Design:

During this step, developers establish the overall structure of the system, including its components, their relationships, and the interactions between them.

This architectural design provides a high-level view of the system's organization.
Design System Components:

With the architectural design in place, developers focus on designing individual components or modules of the system. They create detailed specifications, which include the functionality, inputs, outputs, and processes for each component.
Design User Interface:

The user interface design involves creating a user-friendly and efficient way for end-users to interact with the system. This can include designing screen layouts, menus, buttons, and other interface elements.
Validate Design:

The final step in the design phase is to ensure that the proposed design meets all the requirements identified during the analysis phase.

Developers may use various methods, such as reviews and simulations, to validate their design before proceeding to the implementation phase.
The design phase is a crucial part of the system development process, as it defines how the system will be built, ensuring it meets the needs of its users and the project's objectives.

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Answer:

I think it's 62. volume is basically just adding the length, width, and height

20 length 2 height. 20 times 2 equals 40 square inches\

The optimal strategy is to answer 4 of type a and 7 of type b questions to achieve a maximum score of 61.

Let x be the quantity of type an inquiries responded to and y be the quantity of type b questions addressed. We need to boost the score, which is given by 4x + 7y subject to the accompanying requirements:

x ≥ 4, y ≥ 3, x + y ≤ 18, x ≤ 10 and y ≤ 10

Utilizing Linear programming methods, we can settle for the ideal upsides of x and y. The arrangement is x = 4, y = 7, which gives a most extreme score of 4(4) + 7(7) = 61.

Subsequently, the ideal technique is to answer 4 of type an and 7 of type b inquiries to accomplish a greatest score of 61.

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The number of ways car 2 or more tires can be selected out of 8 tires is 247 ways

To select 2 or more tires out of 8 tires, we can use the concept of combinations.

The total number of ways to select r items out of n items is given by the formula:

nCr = n! / (r! * (n-r)!)

where n is the total number of items, and r is the number of items to be selected.

For selecting 2 or more tires out of 8 tires, we can find the total number of ways to select 2 tires, 3 tires, 4 tires, 5 tires, 6 tires, 7 tires, and 8 tires, and then add them together.

Adding all the above results, we get:

28 + 56 + 70 + 56 + 28 + 8 + 1 = 247

Therefore, there are 247 ways to select 2 or more tires out of 8 tires.

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This question is incomplete

Complete Question

A baker uses 5.5 Ibs of flour daily

The baker's recipe for a loaf of bread calls for 12 oz of flour. If he uses all of his flour to make loaves of bread, how many loaves can he bake in seven days?

Answer:

51.3 loaves of bread

Step-by-step explanation:

Converting 5.5 Ibs to oz (ounces)

1 Ibs =>12 oz

5.5 Ibs => x

Cross Multiply

12 × 5.5 => 88 oz

1 loaf of bread =>12 oz

Hence, in 1 day

12 oz =>1 loaf of bread

88 oz => x

x =>88 oz/ 12 oz

x => 7.3333333333 loaves of bread

Hence, he can make 7.3333333333 loaves of bread in 1 day

Hence, in 7 days

1 day => 7.3333333333 loaves

7 days => x

x => 7 × 7.3333333333 loaves

x => 51.333333333 loaves of bread

Approximately => 51.3 loaves of bread

Answer:

9

Step-by-step explanation:

190 people=3 busses

570:190=3

so, 570 people= 190p. + 190p. +190p.= 3 busses +3 busses + 3 busses

Step-by-step explanation:

190 people = 3 busses

570:190=3

Answer:

3 & 8

Step-by-step explanation:

Hope this helps

Answer:

5%

Step-by-step explanation:

487/9374=0.05

0.05 would translate to 5%

Hope this helps! :)

Answer:

F (5%)

Step-by-step explanation:

To find the percentage of questions he got correct:

487/9374=0.051....

So, assuming an F is less than 50%, he got an F.

Answer:

uál es el pr

Step-by-step explanation:

a) An example of a polynomial of degree 5 for which x=1 is a critical number but not a local minimum nor a local maximum is:

P(x) = (x-1)^2(x-2)(x+1)(x+3)

To see why x=1 is a critical point but not a local minimum nor a local maximum, we can compute the first and second derivatives of P(x):

P'(x) = 2(x-1)(x-2)(x+1)(x+3) + (x-1)^2(x+1)(x+3) + (x-1)^2(x-2)(x+3) + (x-1)^2(x-2)(x+1)

P''(x) = 2(x-2)(x+1)(x+3) + 2(x-1)(x+1)(x+3) + 2(x-1)(x-2)(x+3) + 2(x-1)(x-2)(x+1) + 4(x-1)(x-2)(x+1)(x+3)

We can see that P'(1) = 0, so x=1 is a critical point. To determine whether it's a local minimum or maximum, we need to look at the sign of P''(1). However, computing P''(1) gives us:

P''(1) = 2(1-2)(1+1)(1+3) + 2(1-1)(1+1)(1+3) + 2(1-1)(1-2)(1+3) + 2(1-1)(1-2)(1+1) + 4(1-1)(1-2)(1+1)(1+3) = 16

Since P''(1) is positive, we know that x=1 is not a local maximum or a local minimum, but rather an inflection point.

b) To determine the intervals on which f(x) = (x-2)(x+3) is decreasing and increasing and find local minima and maxima, we can compute the first and second derivatives of f(x):

f'(x) = 2x+1

f''(x) = 2

We can see that f''(x) is always positive, so f(x) is always concave up. Therefore, any critical points of f(x) will be local minima. To find the critical points, we set f'(x) = 0:

2x+1 = 0

x = -1/2

So x=-1/2 is the only critical point of f(x). To determine whether it's a local minimum or not, we can look at the sign of f'(x) on either side of x=-1/2:

When x < -1/2: f'(x) < 0, so f(x) is decreasing.

When x > -1/2: f'(x) > 0, so f(x) is increasing.

Therefore, we know that x=-1/2 is a local minimum of f(x).

c) To determine the intervals on which f(x) = (x+1)(x-2)(x+3) is decreasing and increasing and find local minima and maxima, we can compute the first and second derivatives of f(x):

f'(x) = 3x^2-2x-7

f''(x) = 6x-2

To find the critical points of f(x), we set f'(x) = 0:

3x^2-2

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The volume of the box is 287 and the height of the box is 3

The figure that completes the question is added as an attachment

On the figure, we have

So, the base area is

Base area = Number of squares x Length of square^2

The volume becomes

Volume = Height x Base area

This gives

Volume = Height x Number of squares x Length of square^2

Substitute the known values in the above equation

Volume = 7 x 41 x 1^2

Evaluate

Volume = 287

The base area is

Base area = Number of squares x Length of square^2

The volume becomes

Volume = Height x Base area

This gives

Volume = Height x Number of squares x Length of square^2

Substitute the known values in the above equation

123 = Height  x 41 x 1^2

Evaluate

123 = Height  x 41

Divide by 41

Height  = 3

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The correct statement is: 'A one-variable data table has input values that are listed either down a column (column-oriented) or across a row (row-oriented). '

The correct answer is an option (a)

We know that a one-variable data table contain its input values either in a single column (column-oriented), or across a row (row-oriented).

And any formula in this data table must refer to only one input cell.

Whereas we se a two-variable data table to see how different values of two variables in one formula will change the formula results.

Custom data tables are used for: Building data-driven services that can easily be updated without modifying it and storing the results.

And the pre-formatted data tables stored as building blocks in galleries that can be accessed any time and be reused any number of times you want.

Therefore, the correct answer is an option (a)

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The complete question is:

A ________ data table has input values that are listed either as column-oriented or roworiented.

A) one-variable

B) two-variable

C) custom

D) pre-formatted

Answer:

Therefore, the shaded portion of the figure represents 44% of the increase in area of the rectangle.

Step-by-step explanation:

The increase in area of the rectangle is represented by the shaded portion of the figure. The shaded portion is the difference between the area of the original rectangle and the area of the new rectangle. The area of the original rectangle is l * w, where l is the length of the rectangle and w is the width of the rectangle. The area of the new rectangle is (1.2l) * (1.2w) = 1.44 * l * w. The difference between these two areas is 0.44 * l * w, which is the shaded portion of the figure.

The percentage increase in area is calculated by dividing the increase in area by the original area and multiplying by 100%. In this case, the increase in area is 0.44 * l * w and the original area is l * w. The percentage increase in area is therefore 0.44 * 100% = 44%.

Therefore, the shaded portion of the figure represents 44% of the increase in area of the rectangle.

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Answer:

you add 8 2/5 and 6 1/2. the common denominator is 10, and when you add, you get 14 9/10. then you subtract

24 - 14 9/10 and you get 9 1/10

The mass of the pencil is approximately 5.49 ounces.

To find the mass of the pencil, we can integrate the density function over the length of the pencil.

The density function is given by rho(x) = 5/x oz/in.

We want to find the mass of the pencil, so we integrate the density function from x = 2 (the starting point of the pencil) to x = 6 (the endpoint of the pencil).

The integral is ∫[2, 6] (5/x) dx.

Evaluating the integral, we have:

∫[2, 6] (5/x) dx = 5 ln(x) ∣[2, 6] = 5 ln(6) - 5 ln(2) = 5 (ln(6) - ln(2)).

Using the property of logarithms, we can simplify this to:

5 ln(6/2) = 5 ln(3) ≈ 5 (1.098) ≈ 5.49 oz.

The mass of the pencil is approximately 5.49 ounces.

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Answer:

c

Step-by-step explanation:

( 4,3) 4 is the x and 3 is the y