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Math Math Problem

Lui V.

asked • 05/03/18

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Z varies directly as x and inversley as y. If z = 16 when x = 32 and y = 0.4, find z when x = 28 and y = 8

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Raymond B. answered • 08/04/21

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z = kx/y

16 =32k/.4

6.4 = 32k

k = 6.4/32 = 1.6/8 = 0.2 = 1/5

z = .2x/y = .2(28)/8= 5.6/8 = .7

z=0.7 = 7/10 when x=28 and y=8

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