SOLUTION: If the sequence is geometric, type in the common ratio. If it is not, type in no. 500, 100, 20, 4,...

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Question 241782: If the sequence is geometric, type in the common ratio. If it is not, type in no.
500, 100, 20, 4,...

Answer by Edwin McCravy(20056) About Me  (Show Source):
You can put this solution on YOUR website!
If the sequence is geometric, type in the common ratio. If it is not, type in no.
500, 100, 20, 4,...

To find out if it is geometric, 

1. divide the second term by the first term.

100%2F500=1%2F5

2. divide the third term by the second term.

20%2F100=1%2F5

3. divide the fourth term by the third term.

4%2F20=1%2F5

They are all the same, so it's a geometric sequence,
and the common ratio, r, is 1%2F5

Edwin