Question

Which of the following represents the sum of the series below? 4+7+10+13+16+19+22+25+28+31+34+37++40

Answer 1

Answer:

3rd option

Step-by-step explanation:

Just did it on edge

Answer 2

The sum of the given series is=286

We have given that the series,

4+7+10+13+16+19+22+25+28+31+34+37+..+40

from the above series,  we have a1=4 and an=40.

and n=13

What is the formula for the sum of the series?

$S_n=n\times(\frac{a_1+a_n}{2} )$

$S_n=13 * (4+40)/2\\\\S_n=13\times\frac{44}{2} \\\\\\S_n=13\times 22\\\\S_n=286$

Therefore the sum of the given series is=286.

To learn more about the series sum visit:

https://brainly.com/question/26133507