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Mathematics 15 Online
OpenStudy (anonymous):

What is the sum of the first five terms of a geometric series with a1 = 20 and r = 1/4? I am required to express the answer as an improper fraction in lowest terms. Please help! I got 405/64 for my answer. Is that right?

OpenStudy (anonymous):

Oh wait... the answer would be \[1705/64\]

OpenStudy (anonymous):

I think

OpenStudy (anonymous):

For anyone looking at this in the future, 1705/64 is the right answer.

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