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Find the sum of the Arithmetic Series on the picture.
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Find the sum of the Arithmetic Series on the picture.

Find the sum of the Arithmetic Series on the picture.-example-1
User Mojimi
by
5.3k points

1 Answer

11 votes

Answer:

Explanation:

The sum of the sequence is the average of first and last terms times the number of terms.

(3n+4) for 3rd and 7th terms and the number of terms is 7-3+1=5 so

(13+25)5/2

38(5/2)

19(5)

95

User Sandeep Das
by
5.3k points
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