# MATH

posted by M

What is the 9th term -1/18 1/6 -1/2

1. TutorCat

(-1/18)*(r)=(1/6)
find r.

geometric progression:
ar^(n-1)
a=1st term
r=ratio
n=nth term

http://www.mathsrevision.net/alevel/pages.php?page=33

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