write an expression to find the ninth term of this sequence then write the next three terms of the sequence. 3,10,17,24,...;n=25

Question

write an expression to find the ninth term of this sequence  then write the next three terms of the sequence. 3,10,17,24,...;n=25

saifoo.khan · Answer

It's an arithmetic progression.

parthkohli · Answer

This is an arithmetic sequence with a common difference of 7.

anonymous · Answer

f(n+1)=f(n)+7

parthkohli · Answer

$\Large \color{MidnightBlue}{\Rightarrow a_{n} =  a_{1} + (n - 1)d }$

anonymous · Answer

the ninth term is 25 and the fourth is 24

saifoo.khan · Answer

Q:How i came to know?
A: as we can see the sequence is constantly increasing with 7 units. so..

$$\Large T_9 = 3 + (9-1)7$$

anonymous · Answer

wtf i have no clue what you are doing

parthkohli · Answer

An arithmetic sequence is when you keep adding a same number.

saifoo.khan · Answer

wtf = wow, that's fantasic.

parthkohli · Answer

To find the nth term, you have to use this formula.


$\Large \color{MidnightBlue}{\Rightarrow a_{n} = a_{1} + (n - 1)d }$

saifoo.khan · Answer

fantastic*

parthkohli · Answer

In my formula, n is the nth term and d is the common difference.

anonymous · Answer

tell me a equation i can use please

parthkohli · Answer

Which I've already told.

anonymous · Answer

give me the equation with numbers and stuff please

saifoo.khan · Answer

Patience..

parthkohli · Answer

$\Large \color{MidnightBlue}{\Rightarrow 3 + 7(n - 1)  }$

parthkohli · Answer

For example, for the 4th term, just replace n with 4.