tayloremeryp89k3g tayloremeryp89k3g

17-05-2018
Mathematics

contestada

What is the sum of the seven terms of the geometric series 2- 8+32-...?

S7=6554
S7=-8192
S7=8192
S7=10922

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Аноним Аноним

17-05-2018

The first term is 2 and the common ratio = -8/2 = -4

S7 = 2 * (-4)^7 - 1
------------- = 6554 answer
-4-1

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