PLEASE HELP WILL MEDAL!! (ans. must be correct)

What is the sum of the arithmetic series below?

Question

PLEASE HELP WILL MEDAL!! (ans. must be correct)

What is the sum of the arithmetic series below?

anonymous · Answer

attachment

anonymous · Answer

Give me a sec to work this out

anonymous · Answer

I'm Working on it

anonymous · Answer

Do what you have to. I don't know how to do this at all.

anonymous · Answer

I used calculus for this answer, what course are you taking online?

anonymous · Answer

algebra 2 course

anonymous · Answer

Calculus???

anonymous · Answer

There is formulas you can find online, i can not explain it to you in a Algebra 2 Way buy your answer is E

anonymous · Answer

A medal would be appreciated, i tried my best to explain it to you

anonymous · Answer

Um there is no answer so no.

anonymous · Answer

1,000,000 is the answer

campbell_st · Answer

you have 1000 numbers with the 1st being 2 and the last 2000

the sum is 

$$S_{1000} = \frac{1000}{2}(2 + 2000)$$

hope it helps

anonymous · Answer

there we go campbell got you, i just didnt know the equation for it

anonymous · Answer

I need help you are wrong no medal

campbell_st · Answer

a simple formula is 

$$s_{n} = \frac{n}{2}(a + l)$$

where n is the number of terms, a is the 1st term and l is the last term

anonymous · Answer

Thank you campbell I will try that now

campbell_st · Answer

all you need to do is substitute i = 1 to find the 1st term 

then i = 1000 to find the last term... 

then use the formula

anonymous · Answer

Thank you I got it!