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OpenStudy (anonymous):
What is the sum of the geometric sequence -1, 6, -36, ... if there are 6 terms? -39,991 6,665 -6,665 39,991
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OpenStudy (anonymous):
which answer is it? i got -6,665
OpenStudy (anonymous):
it probally is
OpenStudy (anonymous):
There first term is -1 and common ratio is -6
OpenStudy (anonymous):
Now, can u use Sum of nth terms of Geometric seires formula
OpenStudy (anonymous):
So basically -1 + 6 - 36 + 216 - 1296 +7776.
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OpenStudy (anonymous):
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