+0  
 
0
65
1
avatar+2482 

Help#1

NotSoSmart  Mar 12, 2018
Sort: 

1+0 Answers

 #1
avatar+86528 
+1

1.  No...in a geometric series.the ratio between the successive term to the previous term must be constant ....note that

 

-4 / 2   =   -2

But

-16 / - 4  =  4    so....not geometric

 

2. Fifth term  

The common ratio  is  36/120  =  3/10

So....the fifth term is

 

First Term * (Common Ratio)n-1   =

 

120 (3/10)5-1  =

 

120 (3/10)4   = 

 

 0.972

 

 

cool cool cool

CPhill  Mar 12, 2018

17 Online Users

New Privacy Policy (May 2018)
We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  Privacy Policy