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2 July, 20:49

the length of a deck is 5 less than twice the width with a perimeter of 62 feet. what is the width of the deck rounded to the nearest tenth

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  1. 2 July, 21:19
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    Let ℓ equal length, w equal width, and P equal perimeter.

    Use the formula 2ℓ + 2w = P.

    ℓ = 2w - 5

    2ℓ + 2w = 62

    Substitute what you do know for what you don't, and solve.

    2 (2w-5) + 2w = 62

    4w - 10 + 2w = 62

    6w - 10 = 62

    6w = 72

    w = (72/6)

    w = 12

    The answer is 12 feet.
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