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solniwko [45]
3 years ago
10

Question 7 of 10 What is the sum of the first five terms of a geometric series with a1 = 10 and r = 1/5?​

Mathematics
1 answer:
enot [183]3 years ago
5 0

Answer:

12.496

Step-by-step explanation:

\text{Sum}=\frac{a*(1-r^n)}{1-r}\\\text{Here a=10, r=1/5, plugging them in the above formula we get}\\\text{Sum}=\frac{10*(1-(1/5)^5)}{1-(1/5)}\\\text{Sum}=\frac{1562}{125}=12.496

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