Question

Find the 20th term of the following sequence.

-6, -4, -2, 0, ...

Answer 1

The awnser is 32

Answer 2

Answer: 32

Explanation:

The sequence is an arithmetic sequence because there is a common difference , which is 2.

The formula for finding nth term of an arithmetic sequence is given as :

`t_(n)` =
`a + (n-1)d`

where :

a = first term

d = common difference

n = number of terms

Therefore : the 20th term will be :

`t_(20)` =
`a + (20-1)d`

`t_(20)` =
`a + 19d`

`t_(20)` = - 6 + 19(2)

`t_(20)` = -6 + 38

`t_(20)` = 32