mosope39 mosope39

03-08-2021
Mathematics

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The perimeter of a rectangle is 18cm . if the length is (x+2), find it's width.

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ASAR2000 ASAR2000

03-08-2021

Answer:

W = 7 - x

Step-by-step explanation:

The perimeter is P= 2L + 2×W , where L is the length and W is the width.

If L = (x+2) , replacing L with the expression x+2 we have

P= 2×(X+2) + 2W ⇔ 18 = 2x + 4 + 2W ⇔ 2W =18 - 2x - 4 ⇔ 2W = 14 - 2x

⇔ W = 7 - x

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