Question

4 + 6 + 8 + 10 + 12 + 14 + 16 + 18

Answer 1

what is summation?

Answer 2

what are sigmas?

Answer 3

lol

Answer 4

yeah I know

Answer 5

http://www.columbia.edu/itc/sipa/math/summation.html

Answer 6

I think it's something like
\[\sum_{k=0}^{5} 2k+1\]
for number one

Answer 7

2n -1 forthe first

Answer 8

and for number 2,\[\sum_{k=2}^{9} 2x\]

Answer 9

\[that \sum_{n=1}^{6}2n-1\]

Answer 10

\[\sum_{1}^{11}x _{i}\] or maybe something like this...

Answer 11

Second one is just about as easy....\[\sum_{k=2}^{9}2k\]

Answer 12

Grazes apparently types faster than I do.

Answer 13

xD sorry 'bout that

Answer 14

really there is mutliple answers lol

Answer 15

are*

Answer 16

i hate english lol

Answer 17

I'm a horrible person. Ignore me.

Answer 18

Je parle francais

Answer 19

this isn't the place to strike up a conversation. do it in the chat box, please

Answer 20

\[4+6+8+10+12+14+16+18\text{ = }88\]\[\sum _{n=2}^9 2n\text{ = }88\]