Question

if the 9th term of an AP is 0 prove that 29th term is double of its 19th term

Answer 1

a = first term d = comm diff

given = a +8d =0

To prove   a+28d= 2{a+18d}

Solving Bottoms Up

A+ 28d= 2a+36D ====>>a+8d =0

Hens Proved

Answer 2

Answer:

Step-by-step explanation:

if 9th term