Question

find the 9th term of an ap with first term -5 and common difference -2.​

Answer 1

Answer:

The 9th term of an ap with first term -5 and common difference -2  is -21.

Step-by-step explanation:

Given:

First term if an AP = a = -5

Common difference = d = -2

No. of terms = n = 9

Find : 9th term of AP

Formula :

$a_n= a+(n-1) d\\a_9 = -5+(9 -1)(-2)\\= -5+(8)(-2)\\= -5 - 16\\= -21$

The 9th term of the AP is -21.