Tweeky Tweeky
  • 02-05-2020
  • Mathematics
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How do you find the length of the indicated side.

How do you find the length of the indicated side class=

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wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 02-05-2020

Answer:

7x+4

Step-by-step explanation:

We have a rectangle

The perimeter is 18x+4

We know the formula for perimeter is

P =2 (l+w)

We know the width is 2x-2

18x+4 = 2 (l+2x-2)

Divide each side by 2

(18x+4)/2 = 2 (l+2x-2)/2

9x+2 =  (l+2x-2)

Subtraxt 2x from each side

9x-2x +2 = l +2x-2-2x

7x+2 = l-2

Add 2 to each side

7x+2+2 = l-2+2

7x+4 = l

The unknown side is

7x+4

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