If it's geometric, the ratio of successive terms does not change:
6.9/6.1 = 1.131
7.7/6.9 = 1.116
...
not geometric
If it's arithmetic, the difference between terms does not change:
6.9-6.1 = .8
7.7-6.9 = .8
8.5-7.7 = .8
9.3-8.5 = .8
looks like an A.S. to me.
Determine whether the sequence is geometric or arithmetic. Then give the general formula for the nth term of the sequence.
6.1, 6.9, 7.7, 8.5, 9.3,...
I think it is Geometric, but i don't know how to find the formula
2 answers
Determine the 8th term of the following arithmetic sequence. -7, 2, 11, 20...