Question

Find the nth term of Ap 9,12,15

Answer 1

Answer:

3n+6

Step-by-step explanation:

Here we use an=a+(n-1)d

for fIND the nth term:

so, a=9 and d=3

so that we put the values in this formula:•

=9+(n-1)3

=9+3n-3

=3n+6

so the nth term is 3n+6

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Answer 2

The nth term of the A.P is 3n+6.

Given,

An arithmetic progression 9, 12, 15...

To Find,

The nth term of the A.P.

Solution,

In the given A.P

9, 12, 15,...

a = 9

d = 12-9 = 3

Now, the formula for calculating the nth term of the A.P is

aₙ = a+(n-1)d

where, a = first term = 9, d= common difference = 3

So,

aₙ = 9+(n-1)3

aₙ = 9+3n-3 = 3n+6

Hence, the nth term of the A.P is 3n+6.

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