Question

Find the sum of the arithmetic sequence: 65, 54, 43, 32, ...-89.

А 1155
B -360
C -180. D -12

Answer 1

C) -180

Explanation:

65 + 54 + 43 + 32 + 21 + 10 - 1 - 12 - 23 - 34 - 45 - 56 - 67 - 78 - 89 = -180. Hope this helps!