3 years ago

If a1=1. And r=1/5 find a8

Mathematics

1 answer:

Kruka [31]3 years ago

7 0

Answer:

a₈ = $\frac{1}{78125}$

Step-by-step explanation:

The nth term of a geometric sequence is

$a_{n}$ = a₁ $(r)^{n-1}$

Here a₁ = 1 and r = $\frac{1}{5}$ , then

a₈ = 1 × $(\frac{1}{5}) ^{7}$ = 1 × $\frac{1}{78125}$ = $\frac{1}{78125}$

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