3 years ago

PLEASE HELP!! Geometric Series

Mathematics

1 answer:

shutvik [7]3 years ago

7 0

Answer:

Step-by-step explanation:

$S_{n}$ = $\frac{a_{1} (1-r^{n} )}{1-r}$

$S_{75}$ = $\frac{10(1-0.9^{75} }{1-0.9}$ = 10(1 - 0.00037) / 0.1 = 99.96

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