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OpenStudy (anonymous):
What is the sum of the first 100 terms in the progression (-6, -2, 2 ...) Thanks!
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OpenStudy (anonymous):
d=4 a=-6 n=100 Sn=n/2{2a+(n-1)d}
OpenStudy (anonymous):
What is the answer? It should be 1,070 and I did not get that answer....
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