An arithmetic series contains 20 numbers. The first number is 102. The last number is 159. Which expression represents the sum of the series?

asked Apr 7, 2018 172k views

1 vote

by ZPPP

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6 votes

given that 159-102=57

and 57/20=2.85

n=2.85

you would make the sum be 102+1n+2n.......20n= sum

Crewshin answered Apr 10, 2018

6.9k points

4 votes

Answer:

It's B

Explanation:

20(102+159/2)

Evgnomon answered Apr 12, 2018

7.1k points

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