Question

What is the partial sum (see attached)

a 216
b 315
c 282
d 249

Answer 1

\[\sum_{i=3}^{8} 3+7i\]

Answer 2

@mahmit2012 any ideas?

Answer 3

hey, this is a hit or miss, but have you tried using Khan's Academy and looking up partial sums? ahve you used your notes or maybe the examples in your textbook, given that you ahve one?

Answer 4

I am taking this class online and I just don't know how to work with these problems, I have a couple and I am not sure how to approach them.

Answer 5

Ok. Well, seeming that we're both oblivious to this, and that neither of us know how to do this, I suggest giving Purplemath.com and Khanacademy.org a whirl. Look up Partial Sums there.
Sorry I couldn't help much, but it seems no one else is giving it much attention.

Answer 6

IF you like, you could ping people by saying @theirname

Answer 7

Ya, I have tried that before, they don't tend to respond. Thanks for all of your help though!

Answer 8

C

Answer 9

Could you possibly show me how you did that? I need to do the same thing for the next question

Answer 10

@CHAD159753 And...?

Answer 11

Guess not, I don't even know if I should trust the answer

Answer 12

@Abbie23 would you mind helping?

Answer 13

5 x 7 = 35 x 3 = 105 x 8 = 840 / 3 = 280 + 2 = 282

Answer 14

Where did you get those numbers from??

Answer 15

7 is shown, tht symbol looks like an "E" (5th letter of the alphabet.)... 3 is shown, 8 is shown, other 3 is shown, and "i" is shown 2 times

Answer 16

Soo... 5 x 7 = 35 x 3 = 105 x 8 = 840 / 3 = 280 + 2 = 282

Answer 17

So did you just make up the 5?? for the 5 x 7

Answer 18

can you communicate with your online math teacher? email, chat maybe?

Answer 19

No, she is not available right now and this has to be done tonight

Answer 20

no I didnt make it up I mean it gave me the exact answer right

Answer 21

I see.

Answer 22

I know, I am just trying to find out where it came from, how you decided to use it in the equation

Answer 23

http://www.khanacademy.org/search?page_search_query=partial+sum
http://search.freefind.com/find.html?id=5014414&pageid=r&mode=ALL&n=0&query=partial+sum
http://www.purplemath.com/modules/series4.htm
http://www.mathatube.com/addition-partial-sum.html
http://www.mathsisfun.com/algebra/partial-sums.html
http://tutorial.math.lamar.edu/Classes/CalcII/EstimatingSeries.aspx
http://tutorial.math.lamar.edu/Classes/CalcII/ConvergenceOfSeries.aspx
IF you can't find it, use CTRL-F and find "partial sums". Some may not be related to your work.

Answer 24

Okay, thank you

Answer 25

Well, good luck with this and future studies. Sorry Chad and I couldn't be of more specified assistance.