SOLUTION: a. Solve the equation for r: {{{W=Cr^(-2)}}}

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Question 127589: a. Solve the equation for r:
W=Cr%5E%28-2%29
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
W=Cr%5E%28-2%29 Start with the given equation


W=C%281%2Fr%5E2%29 Rewrite r%5E%28-2%29 as 1%2Fr%5E2


W=C%2Fr%5E2 Multiply


Wr%5E2=C Multiply both sides by r%5E2


r%5E2=C%2FW Divide both sides by W


r=0%2B-sqrt%28C%2FW%29 Take the square root of both sides