SOLUTION: Find the sum indicated for each of the geometric series listed 16 - 8 + 4 - ..., find S7
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Question 412079
:
Find the sum indicated for each of the geometric series listed
16 - 8 + 4 - ..., find S7
Answer by
ewatrrr(24785)
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Hi
Geometric Series: {16,-8,4 ...} r = -.5
= a(1-r^7)/(1-r)= 16*1.0078125/1.5 = 10.75
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