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22 December, 06:23

A rectangle Has an area of 105 ft.² if the sum of the length and width is 26 feet find the dimensions include units

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  1. 22 December, 08:06
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    LW=105

    L+W=26

    L=26-W

    (26-W) W=105

    26W-W^2=105

    0=W^2-26W+105

    -105=W^2-26W

    -105+169=W^2-26W+169

    64 = (W-13) ^2

    8 = - (W-13) and (W-13)

    8 = - W+13

    5=W

    8 = W-13

    21=W

    105 = 5*21

    Answer: 5 feet x 21 feet
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