Question

a)
Which term of the AP 72, 63, 54, ... is 0?​

Answer 1

Answer:

Step-by-step explanation:

a=72 d=-9

0=72+(n-1)d

=72+(n-1)-9

-72÷-9=n-1

8=n -1

n=9

Answer 2

Answer:

72+(n−1)(−9)=0

or n=9

then the 9 th term of A. P is 0