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Mathematics 7 Online
OpenStudy (anonymous):

Need help :/ Pleaseee

OpenStudy (anonymous):

OpenStudy (lgbasallote):

couldnt you printscreen it and change it to a picture? docx will need downloading

OpenStudy (zepp):

http://puu.sh/tjuP

OpenStudy (zepp):

http://puu.sh/tjuX

OpenStudy (anonymous):

okay for matrix addition you just add the corresponding parts so (3+(-5)), (-2+(-4)) etc

OpenStudy (zepp):

For the second one, you'll have to distribute -6 to every parts.

OpenStudy (zepp):

When substracting matrices, it's the same than adding the -1 times the matrix E.g. A-B = A+ -1(b)

OpenStudy (anonymous):

Okay I think I got that one, but #1 I don't understand still .

OpenStudy (anonymous):

you just add each part of the matrix of one to the corresponding part in the other matrix so your first row will have the values -2, -6 do you think you could try finding the bottom row?

OpenStudy (anonymous):

I have literally never once even heard of this then all of a sudden I have questions about it and I have no idea what to do about it .

OpenStudy (zepp):

http://puu.sh/tjBC

OpenStudy (anonymous):

Are you in linear algebra or something?

OpenStudy (zepp):

http://puu.sh/tjCN

OpenStudy (zepp):

You just have to distribute the -6 everywhere in #2

OpenStudy (zepp):

I mean, #3

OpenStudy (anonymous):

Okay thanks I got 1 and 2 done so far .

OpenStudy (anonymous):

and I mean #3 too

OpenStudy (anonymous):

I need help on 4 and 5 now

OpenStudy (zepp):

http://puu.sh/tjEz

OpenStudy (zepp):

This is #4, as I stated above A-B = A+((-1)B)

OpenStudy (anonymous):

matrix subtraction is the same as addition except now you are subtracting

OpenStudy (zepp):

http://puu.sh/tjGf This is for 5.

OpenStudy (anonymous):

Okay, I think I got them all right, except 4 I still don't understand very good .

OpenStudy (zepp):

http://puu.sh/tjJ0

OpenStudy (zepp):

It's the same as addition.

OpenStudy (anonymous):

Okay thank youu !!

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