Wednesday, September 10, 2008

2-1 adding rational numbers explained

Positive + Negative=Subtract and put the sign of the bigger number
Negative+Negative=Negative
Positive+Positive=Positive

Matrices: When using a matrix you will have the numbers in rows and columns.
[ -5 4] + [ 6 -5] = [ 1 -1]
These are 2*1 Matrices.

14 comments:

Brooke said...

Yo Tyler. The beginning is a bit confusing but I vote that you are correct.

Tyler said...

If anyone else thinks that is confusing please tell me. And explain what is confusing. Thank You

Cy {#83} said...

hey tyler that was good but it was alittle con fusing for me but i still get it so yea....good job :)

Anonymous said...

Good explanation bit hard to understand but still correct, good job

Tyler said...
This comment has been removed by the author.
Cy {#83} said...

Hey we could like talk but that was still really confusing 4 me so yeah sorry :(

Gunner said...

Tyler it looks fine to me.

Cy {#83} said...

this is fun to typ to u lol ha ha ha lol hi every one was up tanner :)

tanner said...

hi that is correct
GOOD JOB

Anonymous said...

Cy, that first part was the rules, then it was kinda like an example, it was confusing to me also but it still works

Ashlee said...

I would have said that when adding matrices, you would add the numbers that are in the same place and whatever you get from that would go in the same place as them in the next matrix. For example,[2 4]+[5 1]=[7 5]
To get the answer you would add 2+5 which is 7. 4+1 is 5 so you would put them in the same place that the other numbers are.

kimber said...

I agree with your answer

Anonymous said...

Cy..... why did you post that??? -sigh-

MIKEY said...

i agree good job