muhammadatiya548 muhammadatiya548

22-11-2021
Mathematics

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

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VirαtKσhli VirαtKσhli

22-11-2021

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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