the 9th term of an AP is 4,9,14 is :
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18
The 9th term of an AP is 4,9,14 is :
Answer:-
9th Term = 5n-1
Step by step explanation:-
9th Term = a+(n-1)d
= 4+(n-1)5
= 4+5n-5
9th Term = 5n-1
Answered by
2
Answer:
a=4,d=9-4=5,an=9th term
an=a+[n-1]d
9=4+[n-1]5
9-4=[n-1]5
5=5n-5
5+5=5n
10=5n
10\5=n
n=2
hope this helps you
Step-by-step explanation:
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