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OpenStudy (anonymous):
What is the 6th term of the geometric sequence where a1 = –4,096 and a4 = 64?
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hartnn (hartnn):
do you know the formula for n'th term of geometric series ?
hartnn (hartnn):
\(\large a_n=a_1r^{n-1}\)
hartnn (hartnn):
we are given the 4th term, so n=4 a4 = 64, a1 = -4096 so, can you plug these in general formula to get the value of 'r' first ?
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