Math

The length of a rectangular field is 3 yards less than twice the width. If the area of the field is 104 squared yards, what are the dimensions of the field? The answer is W=8, L=13 How do you work it out to get the answer????

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  1. let the width be x
    then length is 2x-3

    x(2x-3) = 104
    2x^2 - 3x - 104 = 0
    (2x+13)(x-8) = 0
    x = -13/2 or x = 8, but x has to be positive for width
    x = 8

    width is 8
    length = 2(8) - 3 = 13

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    posted by Reiny

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