1. Determine common difference d and the nth term an of arithmetic sequence whose 7th term is 11 and 9th term is 10
Common difference d of arithmetic sequence is?
nth term an of arithmetic sequence is?
2. Determine the common difference d and nth term an of arithmetic sequence whose 6th term is 23 and 12th term is 53.
Common difference d of arithmetic sequence is?
The nth term an of arithmetic sequence is?