Question

whats the 21st term in the arithemtic sequence in which...

Answer 1

\[a _{3} is 59 and a _{1} is 103 \]

Answer 2

enter the term

Answer 3

What is 59-103?

Answer 4

term 1 = 103
term 2 = ?
term 3 = 59

In order to find term two find the difference between term 1 and term 3 and divide that by 2.

That will give you your change in value.

then you will have everything you need to make another equation in the form of :

An = term 1 +(change in value)*(n-1)

Answer 5

once you are there plug in 21 for n and you will have your corresponding 21st term

Answer 6

so -44 /2 = -22

Answer 7

-463?

Answer 8

correct! so that's you change in value.

now you can make your formula

Answer 9

but its asking for the term

Answer 10

I got -337

Answer 11

A_21 = 103-22*(21-1) = 103 - 440 = -337

Answer 12

so the term is -337

Answer 13

?

Answer 14

You tell me

Answer 15

yes?

Answer 16

yes

Answer 17

so -337?(:

Answer 18

ahha you really need your verification don't you .. yes yes it is

Answer 19

Yes(: