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lesya [120]
3 years ago
14

Suppose y varies directly as x, and y = 9 when x = 36. Find y when x= 100.​

Mathematics
1 answer:
gregori [183]3 years ago
5 0

Answer:

25

Step-by-step explanation:

let x = 36

y =  9

x2 = 100

y2 = y2

y : x :: y2 : x2

We know,

Product of means = Product of extremes

That is,

y(x2) = x(y2)

Substituting the values,

9(100) = 36(y2)

=> 36(y2) = 900

=> y2 = 900/36

=> y2 = 25

so when x = 100, y =25

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