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Mathematics 9 Online
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?

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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