Question

in an AP the first term is ? and its common difference is 8. If the general term is an find a19-a11
a 65
6 64
o 66
d) 6)
e) 63​

Answer 1

Step-by-step explanation:

7u3gcsusuiuhzhhshsjsjjzjsjsjsjbh

a you

ggehuxhxbvwbwhshhshejje

aujsjsjeueud

Answer 2

Answer:

The value of $a_{19}-a_{11}$ is 64

Step-by-step explanation:

In Arithmetic progression nth term is

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

Here a is first term

and d is common difference.

Given the common difference is 8

We have to find the value of first term  and $a_{19}$ - $a_{11}$.

Given common difference is 8

now $a_{19}$ term is

$a_{19}= a+18d$

$a_{19} =a+18(8)\\ =a+144$------------(1)

$a_{11}$ term is

$a_{11}=a+10d$

$a_{11} =a+10(8)\\ =a+80$-----------(2)

now the value of $a_{19} -a_{11}$    ---------------(3)

put the values of $a_{19}$ and $a_{10}$ in equation (3)

$a_{19} -a_{11} = a+144-a-80\\ =144-80\\ =64$