99 is the ....... term of the A.P. 9, 18, 27, 36,....
Answers
Answered by
1
Answer:
a=9, d=18-9=9, An=99
An=a+(n-1)d
99=9+(n-1)9
99=9+9n-9
99=9-9+9n
99=9n
n=99/9
n=11
99 is the 11th term of the A.P.
Answered by
1
Answer:
a = 9
d = 9
an = 99
n = ?
an = a + (n - 1)d
99 = 9 + (n - 1)9
99 = 9 + 9n - 9
9n = 99
n = 99/9
n = 11th term
99 is the 11th term of the A.P. 9, 18, 27, 36,.....
Step-by-step explanation:
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