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OpenStudy (katecc379):
What is the sum of a 7-term geometric series if the first term is −11, the last term is −45,056, and the common ratio is −4?
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OpenStudy (leenathan):
S7 = -11 * (1 - (-4)^7) --------- 1-(-4)
OpenStudy (katecc379):
-36047?
OpenStudy (clefspeare7):
-36,047 is correct
OpenStudy (katecc379):
Given the arithmetic sequence an = 3 + 2(n − 1), what is the domain for n? how about this
OpenStudy (katecc379):
@Clefspeare7
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