SOLUTION: Find the nth term formula for the geometric sequence whose first term is 18 and whose second term is 9.

SOLUTION: Find the nth term formula for the geometric sequence whose first term is 18 and whose second term is 9.

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Question 38237: Find the nth term formula for the geometric sequence whose first term is 18 and whose second term is 9.

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Find the nth term formula for the geometric sequence whose first term is 18 and whose second term is 9.
nth term formula a(n)=ar^(n-1)
a=18
r=9/18=1/2
nth term is a(n)=18(1/2)^(n-1)
Cheers,
Stan H.
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