## anonymous 4 years ago Find the 15th term of the arithmetic sequence. 2, 3.5, 5, 6.5, ...

1. anonymous

0.5+(n*1.5) where n is the nth term

2. campbell_st

you need to find the common difference d as the 1st term a= 2 and the number of terms n = 15 then use the formula $T _{15} = 2 + (15 -1)\times d$

3. anonymous

Thanks