Question

if the nth term of ap is 3n+4 then the value of a1+a9 is please help it's urgent​

Answer 1

Answer:

17

an = 3n + 4

a1 = 3*1 + 4

= 7

a2 = 3*2 + 4

= 10

a1 + a2 = 7 + 10 = 17

Answer 2

Given

3n+4 (nth term)

solution-

️put (n = 1) in 3n+4 to obtain a1 value----

a1 = 3×1 + 4

= 7

️put ( n= 9) in 3n+4 to obtain a9 value---'

a9= 3×9+4

= 31

now according to the question--

7 + 31 = 38.

I hope it will help u❤