Question

Find x if 4,x,9 are in AP.

Answer 1

x - 4 = 9 - x

x + x = 9 + 4

2x =13

x = 13/2

Answer 2

Answer:

answer is 13/2 or 6.5

Step-by-step explanation:

x-4=9-x ( as d = a2-a1)

2x=13

therefore x= 6.5 or 13/2