+0  
 
0
141
1
avatar+588 

Enter the explicit rule for the geometric sequence.

9,6,4,83,…

 

an= 

adore.nuk  Feb 7, 2018
 #1
avatar+92808 
+1

We can find the common ratio, r,  by

 

Ratio  of   :  2nd term / 1st   term   =

 

6 / 9   =   2/3

 

So.....the explicit formula  is

 

an  = 9 (2/3)n- 1

 

 

cool cool cool

CPhill  Feb 7, 2018

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