Question

in A.P.a=-18 ,n=10a. a=9. ,find the value of d=?​

Answer 1

Answer:

question is wrong please recheck question

Answer 2

Answer:

i know the answer

Step-by-step explanation:

a= -18

n=10

d?

we use the formula añ= a+(n-1)×d

-18 = 9+9×d

-18=18×d

-1 = d