Question

The 8th term of an arithmetic sequence is 12 and it's 12 th term is 8. What is the algebraic expression for this sequence

Answer 1

Answer:

4

Step-by-step explanation:

The 8th term of an arithmetic sequence = 12

It's 12th term = 8

i.e,_,_,_,_,_,_,_,12,_,_,_,8

here we observe the difference sequence(D.S)=1 and it's decreasing orderly.

so, finally the algebraic expression for this sequence is 19,18,17,16,15,14,13,12,11,10,9,8