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OpenStudy (anonymous):
What is the 8th term of the geometric sequence 1, –4, 16, …?
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OpenStudy (lilg132):
-64, 256, -1024, 4096, -16384
OpenStudy (anonymous):
First find the formula for the nth term and then plug in 8 \[(-1)^{n+1}4^{n-1}\]
OpenStudy (lilg132):
was my answer wrong?
OpenStudy (anonymous):
No. Try plugging in 8 in my formula :)
OpenStudy (lilg132):
so my answer is right?
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OpenStudy (anonymous):
Yes, it is.
OpenStudy (lilg132):
lol ok just checking
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