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OpenStudy (anonymous):
In the geometric sequence, a8=64 and a10=0.25. Use the geometric mean to find the value of a9.
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hartnn (hartnn):
Geometric mean of a8 and a10 is a9 so, go for, \(\large a_9=\sqrt{a_8\times a_{10}}=...?\)
OpenStudy (anonymous):
I got 4
hartnn (hartnn):
i got 4 too :) its correct!
OpenStudy (anonymous):
thanks
hartnn (hartnn):
welcome ^_^
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