SOLUTION: given a term in a geometric sequence and the common ratio find the term named in the problem and the explicit formula http://prntscr.com/s9icar

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Question 1157838: given a term in a geometric sequence and the common ratio find the term named in the problem and the explicit formula
http://prntscr.com/s9icar
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39630)   (Show Source): You can put this solution on YOUR website!
#19:


General term,


What will be sixth term, or at index 6?
1        4
2         -8
3        16
4        -32
5        64
6      -128

If you then want term at index 11, just substitute 11 for the general term formula.
Answer by MathTherapy(10557)   (Show Source): You can put this solution on YOUR website!
given a term in a geometric sequence and the common ratio find the term named in the problem and the explicit formula
http://prntscr.com/s9icar
Term of a G.P. formula: 

 ----- Substituting 6 for n, and - 2 for r

 ------ Substituting 





 

For the value of , or the 11th term, substitute  into the G.P. formula: , and SIMPLIFY. 

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