AP 5th term is 11 and 9th term is 7 . Find the 16th term
Answers
Answered by
1
Step-by-step explanation:
AP 5th term=11
a+4d=11
9th term =7
a+8d=7
4d=-4
d=-1
a=15
16th term =a+15d=15-15=0
Answered by
0
Answer:
HEY MATE... here is your answer
Step-by-step explanation:
a5 = 11
a + 4d = 11 …… (1)
a9 = 7
a + 8d = 7 ……….. (2)
(1) - (2)
4d – 8d = 11 – 7
–4d = 4
d = -1
a + 4(–1) = 11
a – 4 = 11
a = 15
n = 16
Now, a16 = 15 + (16 – 1)(-1)
a16 = 15 – 15
a16 = 0
Similar questions