Question

1) The nth term of an AP is 7 – 4n. Find its common difference.

Answer 1

Answer:

nth term of an AP = 7 -4n

e.g Tn = 7 -4n

put n = 1 then T1 = 7 - 4= 3

put n = 2 then T2 = 7 -4× 2 = 7-8 = -1

common difference = T2 - T1 = -1 -3 = -4

hence common difference = -4

HOPE IT HELPS U

PLEASE MARK AS BRAINLIST ANSWER

Step-by-step explanation:

Answer 2

Answer:

pz guise follow me and msrk a brinlidt

Step-by-step explanation:

the 9th term is common difference is n=4/7