SOLUTION: Hello I need help solving a geometric sequence, I need to find S20 for the series -1 + -3 + -5 + -7. And if possible I'd love to see the steps into solving this problem for future

SOLUTION: Hello I need help solving a geometric sequence, I need to find S20 for the series -1 + -3 + -5 + -7. And if possible I'd love to see the steps into solving this problem for future

Algebra.Com

Question 1089458: Hello I need help solving a geometric sequence, I need to find S20 for the series -1 + -3 + -5 + -7. And if possible I'd love to see the steps into solving this problem for future reference.
Answer by ikleyn(52851) (Show Source): You can put this solution on YOUR website!
.
Your sequence is not geometric.

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