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Asked by Pannacotta Fugo

Find the sum of a geometric series with the following values: a1=10; r=0.5; n=4
I got: 17.3205
6 years ago

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Answered by Reiny
sum(n) = a(1 - r^n)/(1 - r)
= 10(1 - .5^4)/(.5)
= 18.75

how did you get 17.3205 ?
6 years ago
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Find the sum of a geometric series with the following values: a1=10; r=0.5; n=4
I got: 17.3205

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