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morpeh [17]
3 years ago
10

If y varies inversely as x and y = 8 when x = 9, find x when y = 12.

Mathematics
1 answer:
myrzilka [38]3 years ago
5 0

Answer:

x = 6

Step-by-step explanation:

An inverse variation is

xy = k where k is the constant of variation

8*9 = k

72 = k

xy = k

Let y = 12

x*12 = 72

Divide each side by 12

12x/12 =72/12

x = 6

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