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OpenStudy (anonymous):
Identify the 8th term of the geometric sequence -2, -12, -72 ... Identify the 12th term of a geometric sequence where a1 = 8 and a6 = -8,192. Identify the 19th term of a geometric sequence where a1 = 14 and a9 = 358.80. Round the common ratio and 19th term to the nearest hundredth.
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OpenStudy (anonymous):
-72*6
OpenStudy (anonymous):
an=a1r^(n-1)
OpenStudy (anonymous):
suppose the common ratio is r, now apply the formula given by @optiquest
OpenStudy (anonymous):
Ok, got that one. What about the other two?
OpenStudy (anonymous):
same formula can be applied
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