34.0k views
1 vote
Find a12 in the sequence -4, 12, -36

User Tarostar
by
7.1k points

1 Answer

4 votes
a12= 708588


Formula: a1 * r^n-1
a12= -4 * (-3) ^12-1
a12= -4 * (-177147)
a12= 708588
User VeV
by
8.3k points