Question

if 8x+7,15,2x-7are three consecutive terms of an arithmetic sequence.find fourth term?

Answer 1

Answer:

fourth term of this Ap is 1 - 6x

Step-by-step explanation:

Ap 8x + 7 , 15 , 2x - 7 , a4

a = 8x +7

d = a2 - a1

= 15 - 8x - 7

= 8 - 8x

fourth term

a4 = a3 + d

= 2x - 7 + 8 - 8x

= 1 - 6x Ans.