Question

which term of AP 4 9 14 is 89

Answer 1

Un= a + (n-1) d
89 = 4+ (n-1)5
89= 4 + 5n -5
89+5-4=5n
89+1=5n
90=5n
Divide both side by 5
N = 18
Therefore 89 is the 18th term
May this helps thn mrk as brainliest