SOLUTION: Please help me! I need to find the 10th term of the geometric sequence. a9 = 8; r = .5 thanks

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Question 77796: Please help me!
I need to find the 10th term of the geometric sequence.
a9 = 8; r = .5
thanks
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
If you want to find a%5B10%5D, then simply multiply r by a%5B9%5D. The reason why this works is because r is the constant that you multiply by to get from term to term. So we find that a%5B10%5D equals

a%5B10%5D=a%5B9%5D%2Ar

a%5B10%5D=8%2A%280.5%29

a%5B10%5D=4
So our tenth term is 4