SOLUTION: Evaluate the sum of the first 10 terms of the series 8, 6, 4.5, 3.375

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Question 962006: Evaluate the sum of the first 10 terms of the series 8, 6, 4.5, 3.375
Answer by Edwin McCravy(20056) About Me  (Show Source):
You can put this solution on YOUR website!

The formula for the sum to n-terms is
S%5Bn%5D%22%22=%22%22%28a%5B1%5D%281-r%5En%29%29%2F%281-r%29

Plugging in:
S%5B10%5D%22%22=%22%22%288%281-0.75%5E10%29%29%2F%281-0.75%29
S%5B10%5D%22%22=%22%2230.197967529296875
Edwin