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The first term of an arithmetic sequence is -5, and the tenth term is 13. Find the common difference.

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2 Answers

3 votes

Answer:

d = 2.

Explanation:

First term = -5

10th term = -5 + 9d where d is the common difference, so

-5 + 9d = 13

9d = 18

d = 2.

User Greg Olmstead
by
8.1k points
1 vote

Answer:

2

Explanation:

If the common difference is d we can write:

-5 + 9d = 13

9d = 18

d = 2

User Yeonsu
by
7.9k points

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