Question

find 9 th term from the end AP5.9.13..............185​

Answer 1

Step-by-step explanation:

9th term=?

a=5,n=9

t1=5,t2=9,t3=13

d=t2-t1=9-5=4

$tn = a + (n - 1)d$

t9=5+(9-1)4

t9=5+8(4)

t9=5+32

t9=37

hence,the 9th term of A.P is 37