+0  
 
+20
670
3
avatar+1886 

\(9\left (r-{r^ \frac{1}{2}} \right )= {-3r^\frac{1}{2}}-5r\)

\(A:\\ 0\space only\\ B:\\ \frac {3}{7}\space only\\ C:\\ 0\space and\space \frac{9}{49}\\ D:\\ 0\space and\space \frac{49}{9}\\ \)

 Sep 28, 2016

Best Answer 

 #1
avatar+1886 
+26

Nothing was here, stop stalking my profile.

 Sep 28, 2016
edited by EighthMersennePrime  Apr 20, 2017
edited by EighthMersennePrime  Apr 20, 2017
edited by EighthMersennePrime  Apr 20, 2017
 #1
avatar+1886 
+26
Best Answer

Nothing was here, stop stalking my profile.

EighthMersennePrime Sep 28, 2016
edited by EighthMersennePrime  Apr 20, 2017
edited by EighthMersennePrime  Apr 20, 2017
edited by EighthMersennePrime  Apr 20, 2017
 #2
avatar+1886 
+26

I can't edit the post anymore but the question is what are all the possible values of r that satisfy the equation above?

 Sep 28, 2016
 #3
avatar+33615 
0

Just substitute the values given into the equation to see if they work.

 

(You should find C as the result).

Alan  Sep 28, 2016

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