Question

find the nth term of
25,22,19,16

Answer 1

Answer:

Step-by-step explanation:

a=25 d=-3

tn=a+(n-1)d

t9=25+(9-1)-3

t9=25+(8)×-3

t9=25-24

t9=1

Answer 2

The nth term of sequence is 28 - 3n

Given:

25, 22, 19, 16.... is a Arithmetic sequence

To find:

The nth term of 25, 22, 19, 16..

Solution:  

Given 25, 22, 19, 16.. is a Arithmetic sequence

Here, First term a = 25

Common difference = term 2 - term 1 = 22 - 25 = -3

⇒ a = 25 and d = -3

As we know nth term of Arithmetic sequence $a_{n}$ = a+(n-1)d

⇒ nth term of given sequence = 25 + (n-1)(-3)

= 25 - 3n + 3

= 28 - 3n

Therefore, nth term of sequence is 28 - 3n

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