math 035

posted by mmm

The area of a rectangular garden is 140

square meters. The width is 3

meters longer than ​one-half

of the length.

  1. Reiny

    length --- x
    width ----x/2 + 3

    x(x/2 + 3) = 140
    x^2 /2 + 3x - 140 = 0
    x^2 + 6x - 280 = 0
    (x - 14)(x + 20) = 0
    x = 14, we reject the x = -20

    length is 14 m, width is 10 m

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