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9 January, 11:16

A rectangular porch has an area of 75 square feet. The length of the porch is 4 feet longer than the width. What is the width of the porch?

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  1. 9 January, 14:19
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    X * (x + 4) = 75

    x^2 + 4x - 75 = 0

    x = [-4 + sq root (316) ] / 2

    x = 13.7763888346 / 2

    x = 6.8881944173

    x = 6.888 (rounded)

    Width = 6.888

    Length = Width + 4

    Width = 10.888

    Double Check

    6.888 * 10.888 = 75 square feet
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