SOLUTION: geometric series is given: x=5+15+45+... to 20 terms. Calculate the value of x.

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Question 839990: geometric series is given: x=5+15+45+... to 20 terms.
Calculate the value of x.

Answer by Edwin McCravy(20056)   (Show Source): You can put this solution on YOUR website!
x=5+15+45+... to 20 terms

 and 

The sum formula for n terms is:





Edwin

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