Please Help!!! What is the sum of the first five terms of the series 7 + 12 + 17 + ... ? A. 85 B. 51 C. 60

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asked Nov 24, 2019 123k views

2 Answers

Stian · Answer 1 · 2019-11-25T15:17:50+0000

we meet again !...

It's an arithmetic series.
The sum of the first n terms of an arithmetic series:

The sum of the first five terms is 85.

Siyavash · Answer 2 · 2019-11-29T06:11:43+0000

There are only 5 numbers, so figure out what they are and add them.
Notice that each term is 5 more than the previous one, so add 5 to each term to find out the next term.

7 + 12 + 17 + 22 + 27 = 85

Answer: A. 85

Please Help!!! What is the sum of the first five terms of the series 7 + 12 + 17 + ... ? A. 85 B. 51 C. 60

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