Question

Find the 13th term of the arithmetic sequence whose common difference is d=9 and whose first term is is a₁ = -5.​

Answer 1

Explanation:

d = 9

a = - 5

Nth term of an arithmetic sequence = a+(n- 1)d

13th term = a+(13-1)d

13th term =(-5)+ (12×9)

= - 5 + 108

= 103