Algebra

The length of a rectangle is 1 foot less than twice the width, and the area of the rectangle is 21 ft.². Find the dimensions of the rectangle

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asked by Heather
  1. w (2w-1) = 21

    2 w^2 - w - 21 = 0

    (2 w -7)(w+3) = 0

    w = 7/2 = 3.5

    then L = 6

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    posted by Damon
  2. Mr. Yau uses 88m of fence to enclose 384m^2 of a rectangle plot of lawn. Find the dimensions of the lawn.

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    posted by bibi

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