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Interediate algebra

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if f varies jointly as q^2 and h, and if f = 72 when q = 3 and h = 4, find h when f = 48 and q = 2

  • Interediate algebra - ,

    f = khq^2 , where k is a constant

    given: f = 72 , q=3 , h=4
    72 = k(4)(9)
    k = 2

    so f = 2hq^2
    when f=48 , and q=2
    48 = 2h(4)
    h = 6

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