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OpenStudy (pottersheep):
Grade 11 Geometric Series help please. (Can you help me spot my mistake?)
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OpenStudy (pottersheep):
I have to find the sum for n = 7, a = 2, and r = 1/2. I get 127/128...but the answers say 127/32. Is the answer page wrong?
OpenStudy (pottersheep):
I use the formula Sn = (1 - 2^n) / 1-r
OpenStudy (pottersheep):
anyone please?
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