Question

PLEASE HELP Identify the 15th term of the arithmetic sequence in which a. = 10 and ao = 20.

Answer 1

Answer:

The 15th term is 160

Step-by-step explanation:

The details are not clear. So, I will make the following assumptions

$d = 10$ ---- common difference

$a_1 = 20$ ---- first term

Required

The 15th term

This is calculated as:

$a_{n} = a + (n - 1) * d$

Substitute 15 for n

$a_{15} = a + (15 - 1) * d$

$a_{15} = a + 14 * d$

Substitute values for d and a

$a_{15} = 20 + 14 * 10$

$a_{15} = 20 + 140$

$a_{15} = 160$