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3 years ago

F x and r are inversely proportional and x = 9 when r = 72, then what is x when r = 40?

Mathematics

1 answer:

Oksi-84 [34.3K]3 years ago

8 0

Answer:

16.2

Step-by-step explanation:

r = k/x

when x = 9 and r = 72 ,

72 = k/9

k = 72*9

When r = 40 ,

x = k/r

x = 72*9/40 = 16.2

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