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30 August, 22:29

Suppose that y varies directly as the square root of x, and that y=21 when x=361. What is y when x=247? (Round off your answer to 2 decimal places.)

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  1. 30 August, 22:33
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    17.37

    Step-by-step explanation:

    y varies inversely as the square root of x

    Mathematically:

    y = k. root x

    We first find k here

    To find k, we were made to know that y is 21 and x = 361

    k = y/root. x

    k = 21/root. 361

    k = 21/19

    now what is y when x = 247

    From y = k. root x

    y = 21/19 * root 247

    y = 21/19 * 15.72

    y = 17.37
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