Answer:
[tex]\Huge\color{pink}\sf{Question:}[/tex]
how many terms of arithmetic sequence -3,2,7 must be added together for the sum of the series to be 116?
[tex]\Huge\color{pink}\sf{Answer}[/tex]
Answer:
9
Solution:
3 + 2 + 7 = 12 ÷ 116 = 9
- To find the number of terms in an arithmetic sequence, divide the common difference into the difference between the last and first terms, and then add 1.
Note: Just correct me if I'm wrong :)
