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andrew-mc [135]
3 years ago
13

Find the sum of the geometric series.

Mathematics
1 answer:
alexira [117]3 years ago
6 0

Answer:

Sum=\frac{32}{5}=6.4

Step-by-step explanation:

we are given geometric  series as

8-2+\frac{1}{2}-\frac{1}{8}+.......

we can use infinite sum formula

sum=\frac{a}{1-r}

where

a is first term

r is common ratio

so, we have

a=8

r=\frac{-2}{8}

r=-\frac{1}{4}

now, we can plug values

sum=\frac{8}{1-(-\frac{1}{4})}

Sum=\frac{32}{5}=6.4

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