Question

whats the nth term for the sequence 19 15 11 7 3

Answer 1

$\huge\green{Answer:-}$


23 - 4n


Step by step explanation


Given AP 19, 15, 11, 7, 3.....


Here First term, a = 19

Common Difference, d = ( a2 - a1 ) = ( 15 - 19) = - 4


We know that the nth term of an AP is given by

Tn = a + ( n - 1 ) * d


=> Tn = 19 + ( n - 1 ) * ( - 4 )

=> Tn = 19 - 4n + 4

=> Tn = 23 - 4n

Therefore, the nth term of an AP is 23 - 4n.


Hope it helps!

Answer 2

Hi Mate !!

Here is your answer :

Solution :

AP = 19 , 15 , 11 , 7 , 3.....

Here,

First term ( a ) = 19

Common difference ( d ) = 15 - 19 = -4.

Therefore,

Nth term = a + ( n - 1 ) × d

Nth term = 19 + ( n - 1 )× (-4)

Nth term = 19 - 4n + 4.

Nth term = 23 - 4n..

Hence,

Nth term of the given AP = 23 - 4n...

♥ Hope it helps you ♥

By Rishi 403.

BeBrainly..