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1 year ago

Find the missing length indicated thank yall for helping!

Mathematics

1 answer:

marusya05 [52]1 year ago

8 0

Set up a proportion.

The total side of the “top” line is 8 + 10 = 18. The total side of the “bottom” line is 45. This makes the ratio 18/45.

Now we are trying to find the “larger” bottom segment, let it be x. Because the lines are parallel, the ratio of the “larger” top and bottom segments is equal to the ratio of the whole top and bottom lines.

So 18/45 = 10/x

Reduce 2/5 = 10/x

Cross multiply 2x = 50

Solve x = 25

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I need help! Will mark Brainliest for full answer!!!

Softa [21]

Answer:

Part a .............> x = 11

Part b .............> k = 57.2

Part c .............> y = 9.2

Explanation:

The three problems deal with inverse variation between two variables

An inverse variation relation between two variables means that when one of the variables increases, the other will decrease (and vice versa)

Mathematically, an inverse variation relation is represented as follows:

$y = \frac{k}{x}$

where x and y are the two variables and k is the constant of variation

Now, let's check the givens:

Part a:

We are given that y = 3 and k = 33

Substitute in the original relation and solve for x as follows:

$y = \frac{k}{x}\\ \\3 = \frac{33}{x}\\ \\x=\frac{33}{3}=11$

Part b:

We are given that y = 11 and x = 5.2

Substitute in the original relation and solve for k as follows:

$y=\frac{k}{x}\\ \\11=\frac{k}{5.2}\\ \\k=11*5.2=57.2$

Part c:

We are given that x=7.8 and k=72

Substitute in the original relation and solve for y as follows:

$y=\frac{k}{x}=\frac{72}{7.8}=9.2$ to the nearest tenth

Hope this helps :)

6 0

2 years ago

Select the true statement about triangle ABC.

zmey [24]

Answer:

Step-by-step explanation:

sin C=12/13

cos A=12/13

so sin C=cos A

3 0

1 year ago

Perform the indicated row operation

OlgaM077 [116]

Answer:

0, 10, 8, 2

Step-by-step explanation:

3 0

2 years ago

Rectangular windows are being made into a wall of windows for an office building. Each wall is 14 feet tall and 12 feet wide. Th

Artemon [7]

Answer:

168/(x² +7x)

Step-by-step explanation:

The height of each window is 14/(x+7), and the width of each window is 12/x. The area of each window is the product of its height ans width:

area = (14/(x+7))(12/x) = 168/(x(x +7))

area = 168/(x² +7x)

_____

Comment on the problem

There is not enough information given to determine suitable values for x. If x is 42, each window is a square 3 3/7 inches on a side.

7 0

2 years ago

Identify a possible first step using the elimination method to solve the system and then find the solution to the system. 2x − 5

tatuchka [14]

In order to use the elimination method, we have to multiply the equation by some number, so that one of the variable has the same coefficient.

For example, multiplying the first equation by 3 and the second by 2 gives the following, equivalent system:

$\begin{cases}6x-15y=33\\6x+4y=14\end{cases}$

Now, we can subtract the two equations, and we will cancel (eliminate) the x variable:

$-19y=19 \iff y=-1$

Now that y is known, plug it into one of the equations: for example, if we use the first one we get

$2x+5 = 11 \iff 2x = 6 \iff x=3$

6 0

2 years ago

Read 2 more answers

Find the missing length indicated thank yall for helping!​

Find the missing length indicated thank yall for helping!