Question

Find the 2nd term of an arithmetic sequence with t5 = 3 and t7 = 7.

Answer 1

4 help http://answers.yahoo.com/question/index?qid=20100603083214AAZKISn

Answer 2

Thats No Help

Answer 3

helps with the process

Answer 4

First thing you need is to find the difference (d) in the terms. How far have you gotten with this problem?

Answer 5

Not Far At All

Answer 6

use the general formula for n'th term,
\(\large a_n=a_1+(n-1)d\)
put, n= 5 first, what'd u get ?

Answer 7

make that,
\(\large t_n=t_1+(n-1)d\)

Answer 8

Well to start with, you know that t7 and t5 are two terms apart, 7 - 5 = 2, which means that \(t_7=t_5+2d\). Plug in your values and solve for d.