218k views
6 votes
Find the common difference for the sequence shown: [1/5, 13/40, 9/20...)

User Shadowfool
by
7.9k points

1 Answer

11 votes

Answer: 1/8

Step-by-step explanation:

Pick any term and subtract off the previous term to get the common difference.

So,

13/40 - 1/5 = 13/40 - 8/40 = (13-8)/40 = 5/40 = 1/8

Or

9/20 - 13/40 = 18/40 - 13/40 = (18-13)/40 = 5/40 = 1/8

The positive common difference value indicates this arithmetic sequence is increasing.

User Altayseyhan
by
8.8k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.