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15 September, 14:19

The variable z is inversely proportional to x. when x is 19, z has the value 0.68421052631579.

What is the value of z when x = 12?

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  1. 15 September, 14:56
    0
    z = 1.083

    z ≈ 1 (that is z is approximately equals to 1)

    Step-by-step explanation:

    from the question,

    z ∝ 1/x

    z = k * 1/x ... where k is the constant of proportionality

    z = k/x

    when z = 19

    x = 0.68421052631579

    k = ?

    z = k/x

    k = z * x

    k = 19 * 0.68421052631579

    k = 13

    to find the value of z when x = 12

    from

    z = k/x

    z 13/12

    z = 1.083

    z ≈ 1 (that is z is approximately equals to 1)
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