Question

The common difference the following ap 100, 90, 80, 70

Answer 1

Answer: common difference = 10

Answer 2

Answer:

d=-10

Step-by-step explanation:

a1=100

a2=90

a3=80

a4=70

d=a2-a1=a3-a2=a4-a3

d=90-100=80-90=70-80

d=-10

Hope it helps