Is the sequence arithmetic if so identify the common difference 13 20 27 34?

Hello there!

An arithmetic sequence is a sequence where the difference between two consecutive numbers is constant.

then, if we want to see if the sequence is arithmetic, we need to see the differences between the consecutive numbers:

20 - 13 = 7

27 - 20 = 7

34 - 27 = 7

now, we can see that the differences are equal, this means that the distance between two consecutive numbers in the sequence is always 7.

Then, this sequence is an arithmetic sequence, and the common difference is 7.

answer: the answer to your question is parallel