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help me please. 

 May 29, 2018

Best Answer 

 #1
avatar+561 
+2

\(\frac{f}{r^2}+a=n+k\)

Subtract a from each side.

\(\frac{f}{r^2}=n+k-a\)

Multiply each side by r^2.

\(f=(n+k-a)\times r^2\)

Divide each side by (n+k-a).

\(\frac{f}{n+k-a}=r^2\)

And then take the square root of each side, and you get an equation equal to r.

I'll leave this last step for you to do.

 May 29, 2018
edited by Will85237  May 29, 2018
 #1
avatar+561 
+2
Best Answer

\(\frac{f}{r^2}+a=n+k\)

Subtract a from each side.

\(\frac{f}{r^2}=n+k-a\)

Multiply each side by r^2.

\(f=(n+k-a)\times r^2\)

Divide each side by (n+k-a).

\(\frac{f}{n+k-a}=r^2\)

And then take the square root of each side, and you get an equation equal to r.

I'll leave this last step for you to do.

Will85237 May 29, 2018
edited by Will85237  May 29, 2018

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