Question

PLEASE HELP!!!!!

What is the sum of the first 51 terms of the sequence?
-282, -266, -250, -234, ...

Answer 1

6018

Explanation:

100% I took the test!

Answer 2

Answer:6018

Explanation:

Given Sequence

`-282-266-250-234.....`

It represent an A.P. with

first term
`a=-282`

common difference
`d=16`

So sum of 51 term

`S_n=(n)/(2)[2a+(n-1)d]`

`S_(51)=(51)/(2)* [2* (-282)+(51-1)16]`

`S_(51)=(51)/(2)* [-564+800]`

`S_(51)=(51)/(2)* [236]`

`S_(51)=51* 118`

`S_(51)=6018`