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Y varies partly as X and partly as the square root of inverse of X. If Y=11 where X=9 and Y=20 where X=9 calculate Y when X=12.

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y = mx + n/√x

Sorry, y cannot be both 11 and 20 when x=9
So, fix that, and then plug in your values to solve for m and n, then figure y(12)

please help me

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