if y varies directly as x and y =72 when x =8 find x were y =65

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22-02-2018
Mathematics

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if y varies directly as x and y =72 when x =8 find x were y =65

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tn0982p46cab tn0982p46cab · Answer 1 · 2018-02-22T06:18:34+01:00

tn0982p46cab tn0982p46cab

22-02-2018

For a direct relation, y = kx, k being a constant.

For your problem, just plug in the numbers.

(72)= k(8), k=9

So, using this plug k into the equation to find x when y =65. 65=9x, x would equal 65/9.

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