+0  
 
0
742
1
avatar

what is 9x^3/5=72? im trying to find x

 Feb 13, 2015

Best Answer 

 #1
avatar+130514 
+5

9x^3/5=72   multiply both sides by 5

9x^3  = 360   divide by 9 on both sides

x^3  = 40       take the cube root of both sides

x = 3√(40) = 3√(8 * 5)  = (2)3√5

 

 Feb 13, 2015
 #1
avatar+130514 
+5
Best Answer

9x^3/5=72   multiply both sides by 5

9x^3  = 360   divide by 9 on both sides

x^3  = 40       take the cube root of both sides

x = 3√(40) = 3√(8 * 5)  = (2)3√5

 

CPhill Feb 13, 2015

2 Online Users

avatar