Answered

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Find the sum of the arithmetic sequence: 65, 54, 43, 32, ...-89.
А 1155
B -360
C -180. D -12

Sagot :

CharlesGP

Answer:

C) -180

Step-by-step explanation:

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

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