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Help #3

NotSoSmart  Mar 9, 2018
 #1
avatar+88899 
+1

5.

Note, NSS  ....that we multiplied 50  by the common ratio, r, twice to  get 450

 

So

 

50 * r^2   =  450    divide bott sides by  50

r^2  =  9        take the positive root of both sides

r  = 3

 

So.....the missing term is

 

50 * r   =    50 * 3   =    150 

 

 

cool cool cool

CPhill  Mar 9, 2018

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