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By multiplying matrices, calculate the matrix for total dollar volume of sales. I know how to multiply matrices, but this question makes absolutely no sense. What do I multiply?

Mathematics
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linear combination of columns cr*C1+cp*C2
But if you did that, how would the determinant be found? That makes no sense how that can be found if it is in the rows and columns like that. So in thousands, would the first be 10000,000?

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Other answers:

that is not determinant
|dw:1372136163766:dw|
Im sorry, I have been working on a ton of stuff. It's past midnight my time. How can you find that?
Math is not my forte. As I am sure you can tell, haha.
the result is only the sum of cr*first column and cp*second column
Right, so what would that be? In thousands? Because that is what it is listed as in the problem copied
|dw:1372136309101:dw|
|dw:1372136488612:dw|
now just add them
okay. so what I am going to do (just to make sure I understand the drawings) 1. 500*200, 500*15, 500*5 2. 600*30, 600*5, 600*2 Then add the results of 500*2 and 600*30 together, and so on? Is that correct?
Sorry, 20
yes
Awesome. Thanks so much!!
multiplication by left is linear combination of columns, and by right is linear combination of rows
I'm sorry I don't quite understand that. Can you put in smaller terms? Like I said, math is not my forte.
|dw:1372136788063:dw|
|dw:1372137032274:dw|
okay question, on logarithms... 7^(3x - 1) = 5^(x - 1) what is x?
|dw:1372138198267:dw|
so would that be 12.33, -3.09, or .08?
lol, let me see
you're awesome lol
~0.08
thanks a billion
yw
i wish i could pay you to help me lol
i wish it too lol

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