3 years ago

Help me this ASAP!!!!

Mathematics

1 answer:

miskamm [114]3 years ago

8 0

The answer is the 5th one

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Step-by-step explanation:

Given : $a_2=20$ and common ratio (r) = 5

We have to find the 8th term of the geometric sequence whose $a_2=20$ and common ratio (r) = 5

Geometric sequence is a sequence of numbers in which next term is found by multiplying by a constant called the common ratio (r).

$a_n=ar^{n-1}$ ......(1)

where $a_n$ is nth term and a is first term.

For given sequence

a can be find using $a_2=20$ and r = 5

Substitute in (1) , we get,

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Thus, 8th term of the sequence denoted as $a_8$

Substitute n= 8 in (1) , we get,

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Thus 8th term of geometric sequence is 312500

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Step-by-step explanation:

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