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an artist intends to paint a 60-square-foot mural on a large wall that is 18 ft wide and 11 ft tall. find the dimensions of the mural if the artist leaves a border of uniform width around it.

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Mandy

  1. Dimension of mural:
    length = 18-2x
    width = 11-2x

    (18-2x)(11-2x) = 60 , where x < 5.5

    expand, set up like a standard quadratic equation and solve for x,
    make sure to reject the x where x > 5.5
    Hint: it factors nicely

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    Reiny

  2. as you would have seen if you had read my response to you urgent post earlier this morning ...

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    oobleck

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