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algebra 2

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y varies directly with x. When y = 20, x = 50. Find x when y = 36.

  • algebra 2 - ,

    since y varies directly with x, there is some constant k such that

    y = k*x

    Since y=20 when x=50,

    20 = k*50
    k = 2/5

    Now you know k, and you can figure things out for other values

    36 = 2/5 * x
    x = 90

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