115k views
0 votes
Find the sum of the arithmetic sequence.

3, 5, 7, 9, ..., 21
Choices:
39
120
20
23

User Luke Wenke
by
7.3k points

1 Answer

3 votes

Answer:

23

Explanation:

5-3=2

7-5=2

21+2=23

its adding 2 each time the numbers change

User Polli Ester
by
7.6k points

No related questions found

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