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Mathematics, 14.10.2019 01:30 ayoismeisalex

Xvaries directly with y and z. x = 40 when y = 10 and z = 20. find x when y = 30 and z = 40.

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Xvaries directly with y and z. x = 40 when y = 10 and z = 20. find x when y = 30 and z = 40....

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