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20 September, 10:55

The length of is 5 units longer than the width. The perimeter is 9 times the width. Find the length and the width of the rectangle. Show all work.

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  1. 20 September, 11:10
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    P = 2L + 2W

    9 x W = 2 (5 + W) + 2W

    9W = 10 + 2W + 2W

    9W = 10 + 4W

    9W - 4W = 10

    5W = 10

    5 5

    W = 2

    L = 5 + W

    = 5 + 2

    L = 7

    P = 2L + 2W

    P = 2 (7) + 2 (2)

    = 14 + 4

    P = 18
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