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11 August, 00:55

If y varies inversely as the cube root of x, and y = 12 when x = 8, find y when x = 1.

y = ?

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Answers (1)
  1. 11 August, 01:05
    0
    If y varies inversely as the cube root of x:

    y = k / ∛x

    12 = k / ∛8

    12 = k / 2

    k = 12 · 2

    k = 24

    When x = 1

    y = 24 / ∛1 = 24 / 1 = 24

    Answer: y = 24
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