Find the sum of the first 12 terms for the following arithmetic sequence. a2 = 8,...

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Question

Find the sum of the first 12 terms for the following arithmetic sequence. a2 = 8, a4 = 16

Determine the sum of the first 8 terms of the geometric sequence. 4,16, 64, ...

math algebra

Answer 1

Answer #1

Given second tem, a = 2² ata atda 8 0 Fourth Hom, a4= Subtract a+3d a +3d = 16 eq - from 1 a +3d - 16 -atd - 8 ad = 8 d=4 Put

Answer 2

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