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stellarik [79]
3 years ago
10

Help fast!!! Give me the real solution pls. First correct awnser get brainliest!

Mathematics
1 answer:
Over [174]3 years ago
3 0

Answer:

She subtracted the two 10x's where instead you're supposed to add them together.

Step-by-step explanation:

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3 years ago
The perimeter of a rectangle is 72 in. The base is 3 times the height. Find the area of the rectangle
Dovator [93]

Answer:

243 in²

Step-by-step explanation:

Step 1. Calculate the<em> base and height </em>of the rectangle

We have two conditions:

(1)   2b+ 2h = 72 in

(2)           b = 3h               Substitute in (1)

2(3h) + 2h = 72               Remove parentheses

   6h + 2h = 72               Combine like terms

           8h = 72               Divide by 6

             h = 9 in             Substitute in(2)

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Step 2. Calculate the area of the rectangle

A = bh

A = 27 × 9

A = 243 in²

The area of the rectangle is 243 in².

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