Math

At a park, a landscaper wishes to plant a uniform border of tulips around the outside of a 18m by 12m rectangular garden. The garden will look best if the area of the tulip border is half the area of the garden. How wide should the border be?

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asked by Lorrie
  1. P=2(18)+ 2(12)= 36 +24+ 60
    A+18x12=216
    Tulip border= 216/2=108

    (18+x)(12+x)=(18x12)/2 +216
    216+18x+12x+x^2=108+216
    x^2+30x-108=0
    cannot factor
    quadratic equation = -40.82 or -20.82

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    posted by Lorrie
  2. Guidance as to where I am going wrong?

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    posted by Lorrie

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