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17 January, 23:28

The length of a rectangle is four times its width. If the perimeter of the rectangle is 20 feet, how many feet long is the rectangle's length?

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  1. 17 January, 23:50
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    Largeur = x

    longueur = 4 x

    2 (x + 4 x) = 20

    2 x + 8 x = 20

    10 x = 20

    x = 2

    largeur = 2 et longueur = 8
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