SOLUTION: sqrt(1240/c)=3963. I need to solve this equation for c and am having an impossible time trying to figure this equation out because every number i get does not plug into original eq

Algebra ->  Radicals -> SOLUTION: sqrt(1240/c)=3963. I need to solve this equation for c and am having an impossible time trying to figure this equation out because every number i get does not plug into original eq      Log On


   

Question 564026: sqrt(1240/c)=3963. I need to solve this equation for c and am having an impossible time trying to figure this equation out because every number i get does not plug into original equation and make it true.
Found 2 solutions by stanbon, jerryguo41:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
sqrt(1240/c)=3963
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square both sides to get:
(1240/c) = 3963^2
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c = 1240/3963^2
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c = 7.8954^10^-5
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Checking:
sqrt[(1240/(1240/3963^2)] = 3963
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[(1240/(1240/3963^2)] = 3963^2
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(1240) = [1240/3963^2][3963^2]
1240 = 1240
=================
Cheers,
Stan H.

Answer by jerryguo41(197) About Me  (Show Source):
You can put this solution on YOUR website!
sqrt%281240%2Fc%29=3963
square both sides
1240%2Fc=3963%5E2
multiply c to both sides
1240=3963%5E2%2Ac
Divide 3963^2 from both sides
c=1240%2F3963%5E2
c=1240%2F15705369
thus if you plug in
sqrt(1240/(1240/15705369))
in a calculator you will get 3963