Question

if 5th and 9th term of an ap are 22 and 32 respectively then then the first term of an ap is​

Answer 1

Step-by-step explanation:

Given that : A5=22

A9=32

A5 =A+4d

22=A+ 4d...1eq.

A9=A+8d

32=A+8d....2eq.

sub. 2eq. from 1 eq.

A+4d=22

A+8d=32

solving the eqn

-4d=-10

d=5/2

Putting value of d=5/2 in 1 eq.

A+4*5/2=22

we will get

A=11