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Lubov Fominskaja [6]
3 years ago
7

The area of a trapezoid is 69.6 in2 and its altitude is 8.7 in. Find the perimeter of the trapezoid if the sum of its legs is eq

ual to the sum of its bases.
Mathematics
1 answer:
Murljashka [212]3 years ago
7 0
To answer this, you will find the sum of the bases by using the area of a trapezoid formula:

A = 1/2 x h x (b1 + b2) - You will represent the area of the 2 bases as x,                                                  because it says the sum of the bases so this can be 
                                     written as 1 term, x
69.6 = 1/2 x 8.7 x (x);  solve for x
69.6 = 4.35x; divide both sides by 4.35
x = 16 in.

If 16 inches is the sum of the 2 bases and the sum of the legs, than you will double this answer to find the perimeter.

16 in x 2 = 32 inches

The perimeter is 32 inches.


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storchak [24]

<em>Solution</em><em>,</em>

<em>P=</em><em>{</em><em>7</em><em>,</em><em>8</em><em>,</em><em>1</em><em>2</em><em>,</em><em>1</em><em>9</em><em>}</em>

<em>Q=</em><em>{</em><em>1</em><em>2</em><em>,</em><em>1</em><em>5</em><em>,</em><em>1</em><em>7</em><em>,</em><em>1</em><em>9</em><em>}</em>

<em>P </em><em>U </em><em>Q=</em><em>{</em><em>7</em><em>,</em><em>8</em><em>,</em><em>1</em><em>2</em><em>,</em><em>1</em><em>9</em><em>}</em><em> </em><em>U </em><em>{</em><em> </em><em>1</em><em>2</em><em>,</em><em>1</em><em>5</em><em>,</em><em>1</em><em>7</em><em>,</em><em>1</em><em>9</em><em>}</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>=</em><em>{</em><em> </em><em>7</em><em>,</em><em>8</em><em>,</em><em>1</em><em>2</em><em>,</em><em>1</em><em>5</em><em>,</em><em>1</em><em>7</em><em>,</em><em>1</em><em>9</em><em>}</em>

<em>P-Q=</em><em>{</em><em>7</em><em>,</em><em>8</em><em>,</em><em>1</em><em>2</em><em>,</em><em>1</em><em>9</em><em>}</em><em>-</em><em>{</em><em>1</em><em>2</em><em>,</em><em>1</em><em>5</em><em>,</em><em>1</em><em>7</em><em>,</em><em>1</em><em>9</em><em>}</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em>=</em><em>{</em><em>7</em><em>,</em><em>8</em><em>}</em>

<em>Hope </em><em>it</em><em> helps</em>

<em>Good </em><em>luck</em><em> on</em><em> your</em><em> assignment</em>

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3 years ago
2x+3y 26<br> 3x +2y 6<br> Any solutions
Iteru [2.4K]
6 might be helpful
8 0
3 years ago
Write an exponential model given the two points ​(​6,130​) and ​(7​,220​).
Katyanochek1 [597]

Answer:

<u>y=90x−410</u>

Step-by-step explanation:

in point-slope form, this would be...

y−130=90⋅(x−6)<-----

If you convert this to slope-intercept form this would be...

y=90x−410

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2 years ago
On a spinner, there are twenty equal-size sections numbered from 1 to 20. Which spinner game is fair? Show your work.
Anvisha [2.4K]

The spinner game is an illustration of probability, and the spinner game that is fair is (b) If you spin a number greater than 10, you win.

<h3>How to determine the fair game?</h3>

The number of sections in the spinner is given as:

n = 20

There are 10 numbers greater than 10 i.e. 11 to 2.

So, the probability that a number greater than 10 is spun is:

P = 10/20

P = 0.5

The probability that a number that is not greater than 10 is spun is calculated using the following complement rule

q = 1 - p

This gives

q = 1 - 0.5

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Notice that both probabilities are the equal

Hence, the spinner game that is fair is (b) If you spin a number greater than 10, you win.

Read more about probability at:

brainly.com/question/3581617

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Okay lets get started.

I drove 110 miles with speed of 55 mi/hr so the time taken =

time = distance / speed

time = 110 / 55 = 2 hrs For the distance which is covered with 55 mi/hr speed.

Total time for reaching home is 4 hrs 15 minutes. (given in question)

Means rest distance after snow is covered in = 4 hrs 15 minutes - 2 hrs

= 2 hrs 15 minutes = 2 + 15/60 = 2.25 hrs

The speed in snow driving is 35 mi/hr

So distance covered in snow driving is = 2.25 * 35 = 78.75 miles

Hence the total distance = 110 + 78.75 = 188.75 miles : Answer

Hope that will help :)

6 0
3 years ago
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