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Nady [450]
3 years ago
7

Suppose y varies directly as x. If x = 15 when y = 12, find x when y = 21.

Mathematics
1 answer:
Pachacha [2.7K]3 years ago
5 0

Answer:

x=26.25

Step-by-step explanation:

Let y=kx

12=15k

k=k=\frac{12}{15} \\again 21=\frac{12}{15} *x\\x=21*\frac{15}{12} =\frac{105}{4} =26.25

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