Find 20th term of the arithmetic sequence 2, –4, –10, …

Alfredeim

Alfredeim

Answered question

2022-09-08

Find 20th term of the arithmetic sequence 2, –4, –10, …

Answer & Explanation

Andrejkoxg

Andrejkoxg

Beginner2022-09-09Added 20 answers

At the 20th term you must have done this 19 times.
So the 20th term is 2 - ( 19 6 ) = - 112

Watch it!
Most of the times the first term is called t 0 .
This means that the 20th term is then t 19

But if they ask you for t 20 (=21th) it's different:
t 20 = 2 - ( 20 6 ) = - 118

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?