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5 November, 13:51

A rectangle has a length six less than three times the width. If the perimeter is 28 units find the width and length

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Answers (2)
  1. 5 November, 16:27
    0
    Width = 5 and Length = 9 units.

    Step-by-step explanation:

    Let the width be W, then the length L = 3W - 6.

    Perimeter = 2W + 2L = 2W + 2 (3W - 6) = 28.

    2W + 6W - 12 = 28

    8W = 40

    W = 5 units.

    Therefore L = 3 (5) - 6 = 9 units.
  2. 5 November, 17:13
    0
    Step-by-step explanation:

    Length:

    l = 3w - 6

    Perimeter:

    P = 2l + 2w = 2 (3w - 6) + 2w = 8w - 12 = 28 - -> w = 5

    l = 3*5 - 6 = 9
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