Algebra II Exercise: Arithmetic Series
By B Horn
Directions and/or Common Information:
Using the following arithmetic series, find the sum of the first 10 terms (n = 10)-12 + -15 + -18 + -21 + -24 +…
6 + 7 + 8 + 9 + 10 + …
5 + -4 + -13 + -22 + -31 + …
-6 + -1 + 8 + 15 + 22 + …
2 + 10 + 18 + 26 + 34 + …
Directions and/or Common Information:
Using the following arithmetic series and sum, find n.0 + -4 + -8 + -12 + -16 + … when Sn = -364
7 + 2 + -3 + -8 + -13 + … when Sn = -722
-7 + 0 + 7 + 14 + 21 + … when Sn = 238
1 + 5 + 9 + 13 + 17 + … when Sn = 231
3 + 11 + 19 + 27 + 35 + … when Sn = 885