SOLUTION: evaluate the series to the given term 1. 256 + 192 + 144 + ...; S7 2. 1 � 3 + 9 � 27 + ...; S10 3. �14 + (�7) + 0 + 7 + ...; S10

Question 453276: evaluate the series to the given term
1. 256 + 192 + 144 + ...; S7
2. 1 � 3 + 9 � 27 + ...; S10
3. �14 + (�7) + 0 + 7 + ...; S10
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
the sum of the first n terms of a geometric series is given by the formula
,
where = the first term of the series, and r = common ratio.
1. , r = 3/4.
==>
2. , r = -3.

3. This is an arithmetic series, so .
RELATED QUESTIONS
For questions 1�6 determine whether each series is arithmetic or geometric. Then evaluate (answered by solver91311)

For questions 1-6 determine whether each series is arithmetic or geometric. Then evaluate (answered by arallie)

For questions 1-6 determine whether each series is arithmetic or geometric.... (answered by arallie)

For questions 1-6 determine whether each series is arithmetic or geometric. Then evaluate (answered by arallie)

Im having a brain fart. Im trying to solve 3+9+27+..., find S10 tn=3+(10-1)(is 3 to... (answered by Alan3354)

Find S10 for the series 2 + 7 + 12 + 17... (answered by josgarithmetic,ikleyn)

Find the sum indicated for each of the geometric series listed 3 + 9 + 27 + ..., find... (answered by ewatrrr)

What is the geomertic series of 3+12+48+....,S10 (answered by checkley79)