Question

If the sum of 4th and 8th terms of an ap is 24 and sum of 6+n and 10th terms is 44. Find ap

Answer 1

Answer:

AP is -13, -8, -3......

Step-by-step explanation:

A4=a+3d

A8=a+7d

And

A6=a+5d

A10=a+9d

Then

a+3d+a+7d=24

a+5d+a+9d=44

By solving we get

(1)-- 2a+10d=24

(2)--2a+14d=44

By elimination we want to do that

We get d=5

Sub d value in (1) then

We get a=-13 then do

A1=a=-13

A2=a+d=-13+(5)=-8

A3=a+2d=-13+2(5)=-13+10=-3

thus the AP is -13, -8, -3......