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23 June, 11:22

If z varies directly as x and z=30 when x=8 fine z when x=4

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  1. 23 June, 13:36
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    So for this one all you have to do is use the formular

    Z*k=x

    30k=8

    K=4/15

    Then when x=4

    4/15x=4

    So x=15
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