Question

Given the arithmetic sequence 23, 17, 11 …,evaluate

Answer 1

Series seems to be:
Tn = 23-(n-1)*6

So, find terms 4, 5, 6, ...., 9 and add up.

Answer 2

confused

Answer 3

Nth term = 23-(n-1)*6

Answer 4

ok...

Answer 5

got it..thanks

Answer 6

what would be n?

Answer 7

n is the "number" of the term. For example, the first term is 23 because n=1, n-1=0. So, 1st term = 23.

Answer 8

ok