# algebra

The perimeter of a rectangle equals the sume of the lengths of its four sides. If the width of a rectangle is 9 inches and its perimeter is 52 inches, find the length of the rectangle.

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1. P = 2L + 2W

52 = 2L + 18

52 - 18 = 2L

34 = 2L

24/2 = L

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2. find the unknown side. The area of the rectangle is 126 square centimeters one side is 7 cm what is the value of x.

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posted by Sue

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