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Which equation represents the partial sum of the geometric series?

Which equation represents the partial sum of the geometric series?-example-1
User P Jones
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2 Answers

3 votes

Answer:

It’s A

Explanation:

User Erik Bakker
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5 votes

For this case we expand the series for each value of "n":


125 (\frac {1} {5}) ^ {1-1} +125 (\frac {1} {5}) ^ {2-1} +125 (\frac {1} {5}) ^ {3 -1} +125 (\frac {1} {5}) ^ {4-1} =


125+ \frac {125} {5 ^ 1} + \frac {125} {5 ^ 2} + \frac {125} {5 ^ 3} =\\125+ \frac {125} {5} + \frac {125} {25} + \frac {125} {125} =\\125 + 25 + 5 + 1

So, the correct option is: A

Answer:

Option A

User Josh Rickard
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