SOLUTION: X varies directly with w and inversely with the square root of m. If x is 0.815 when w is 7.15 and m is 625, find x when w is 12.6 and m is 854.

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Question 659687: X varies directly with w and inversely with the square root of m. If x is 0.815 when w is 7.15 and m is 625, find x when w is 12.6 and m is 854.
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

x=rw%281%2Fsqrt%28m%29%29.........

If x is 0.815 when w is 7.15 and m is 625:

=>...0.815+=r%2A7.15%281%2Fsqrt%28625%29%29.......

=>.....0.815+=%287.15%2F25%29r.

=>.....0.815=+0.286r.

=>.....r=+0.815%2F0.286.

=>.....r=+2.85


find x when w+is 12.6 and m+is 854:

x=rw%281%2Fsqrt%28m%29%29

x=2.85%2A12.6%281%2Fsqrt%28854%29%29

x=35.91%281%2F29.22%29

x=35.91%280.034%29

x=1.22094