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# ​ Solve for r.

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this is the answer I got..

Hev123  Mar 5, 2018
#1
+7324
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$$\frac{f}{r^2}+a=n+k\\ \frac{f}{r^2}=n+k-a\\ f=r^2(n+k-a)\\ \frac{f}{n+k-a}=r^2\\ r=\pm\sqrt{\frac{f}{n+k-a}}$$

hectictar  Mar 5, 2018
#2
+13573
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Are a bunch of posters here on the same home-schooling program?  Because I am seeing a LOT of multiple posts of the EXACT same questions from DIFFERENT posters for the last few days....and they are posted with the EXACT same fonts !

Hmmmmm......

ElectricPavlov  Mar 5, 2018
#3
+389
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I don't know.. but I am checking my answers so Ill know that I am working my problems correctly.

Hev123  Mar 5, 2018