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13 February, 19:45

Knowing that a is inversely proportional to b2 and when b=4 a is equal to 5, find the value of a when b=4/5

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  1. 13 February, 23:25
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    a = 16

    Step-by-step explanation:

    inversely proportional

    y = k/x

    a = k/b

    5 = k/4

    solve for k

    multiply by 4 on each side

    20 = k

    a = 20b

    if b = 4/5

    a = 20 * 4/5

    a = 16
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