Write an equation for the nth term of the arithmetic sequence: -3, -5, -7, -9, ...

ivybeibeidn

ivybeibeidn

Answered question

2022-09-06

Write an equation for the nth term of the arithmetic sequence: -3, -5, -7, -9, ...

Answer & Explanation

Ricky Lamb

Ricky Lamb

Beginner2022-09-07Added 7 answers

The formula for an arithmetic sequence is a n = a 1 + ( n - 1 ) d
where a 1 is the first term and d is the difference between terms.
In this case a 1 = - 3 and d=−2
a n = - 3 + ( n - 1 ) ( - 2 ) = - 3 - 2 n + 2 = - 2 n - 1
a n = - 2 n - 1

Do you have a similar question?

Recalculate according to your conditions!

Ask your question.
Get an expert answer.

Let our experts help you. Answer in as fast as 15 minutes.

Didn't find what you were looking for?