Question

The 9th term of an AP is -32 and the sum o lf its 11th and 13th terms is -94 . Find the common difference of the AP.
Please answer it quickly

Answer 1

Ans is d=5 check attachment for explanation

Answer 2

Answer:

-5

Step-by-step explanation:

9th term = a+(9-1)d = a+8d = -32--(2)

11th term = a+(11-1)d = a+10d

13th term = a+(13-1)d = a+12d

a+10d+a+12d=-94

2a+22d=-94

a+11d=-47---(1)

(2)-(1):

-3d=15

d=-5

the common difference is equal to -5