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Ad libitum [116K]
3 years ago
15

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

Mathematics
1 answer:
dangina [55]3 years ago
8 0
Z=kx, 30=8k, so k=30/8=15/4 and z=15x/4, so when x=4, z=15.
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