Question

What is the 25th term of this arithmetic sequence? 3, 9, 15, 21, 27, …

Answer 1

Answer:

The 25th term of the sequence is 147

Step-by-step explanation:

For an nth term in an arithmetic sequence

U(n) = a + (n - 1)d

Where

n is the number of terms

a is the first term

d is the common difference

From the above sequence

a = 3

d = 9 - 3 = 6

So the 25th terms for the sequence is

U(25) = 3 + ( 25 - 1) 6

= 3 + 24(6)

= 3 + 144

The final answer is

= 147

Hope this helps you.