3 years ago

What is the fifth term of a sequence whose first term is 5 and whose common ratio is 3

Mathematics

1 answer:

Novosadov [1.4K]3 years ago

5 0

It's a geometric sequence.

The formula of a general term of a geometric sequence:

$a_n=a_1r^{n-1}$

Substitute

$a_1=5,\ r=3,\ n=5$

$a_5=5(3^{5-1})=5(3^4)=5(81)=405$

<h3>Answer: The fifth term is equal 405.</h3>

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