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6 April, 02:22

Y varies inversely with x. if y = 40 when x = 16, find x when y = -5

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  1. 6 April, 05:41
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    x = - 128

    Step-by-step explanation:

    y varies inversely with x.

    xy = k

    if y = 40 when x = 16

    40 * 16 = k

    640 = k

    xy = 640

    We need to find x when y = -5

    x (-5) = 640

    Dividee each side by - 5

    x (-5) / -5 = 640/-5

    x = - 128
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