Question

if the first term of an AP is -18, an is 10 and nis 10 find d​

Answer 1

Answer:

d=28/9

Step-by-step explanation:

a=-18 , n=10

an=10

a+(n-1)d=10

-18+(10-1)d=10

-18+9d=10

9d=10+18

9d=28

d=28/9