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mbloodworth Group Title

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?

  • one year ago
  • one year ago

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  1. mbloodworth Group Title
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    • one year ago
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  2. RaphaelFilgueiras Group Title
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    linear combination of columns cr*C1+cp*C2

    • one year ago
  3. mbloodworth Group Title
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    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?

    • one year ago
  4. RaphaelFilgueiras Group Title
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    that is not determinant

    • one year ago
  5. RaphaelFilgueiras Group Title
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    |dw:1372136163766:dw|

    • one year ago
  6. mbloodworth Group Title
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    Im sorry, I have been working on a ton of stuff. It's past midnight my time. How can you find that?

    • one year ago
  7. mbloodworth Group Title
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    Math is not my forte. As I am sure you can tell, haha.

    • one year ago
  8. RaphaelFilgueiras Group Title
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    the result is only the sum of cr*first column and cp*second column

    • one year ago
  9. mbloodworth Group Title
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    Right, so what would that be? In thousands? Because that is what it is listed as in the problem copied

    • one year ago
  10. RaphaelFilgueiras Group Title
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    |dw:1372136309101:dw|

    • one year ago
  11. RaphaelFilgueiras Group Title
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    |dw:1372136488612:dw|

    • one year ago
  12. RaphaelFilgueiras Group Title
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    now just add them

    • one year ago
  13. mbloodworth Group Title
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    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?

    • one year ago
  14. mbloodworth Group Title
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    Sorry, 20

    • one year ago
  15. RaphaelFilgueiras Group Title
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    yes

    • one year ago
  16. mbloodworth Group Title
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    Awesome. Thanks so much!!

    • one year ago
  17. RaphaelFilgueiras Group Title
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    multiplication by left is linear combination of columns, and by right is linear combination of rows

    • one year ago
  18. mbloodworth Group Title
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    I'm sorry I don't quite understand that. Can you put in smaller terms? Like I said, math is not my forte.

    • one year ago
  19. RaphaelFilgueiras Group Title
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    |dw:1372136788063:dw|

    • one year ago
  20. RaphaelFilgueiras Group Title
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    |dw:1372137032274:dw|

    • one year ago
  21. mbloodworth Group Title
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    okay question, on logarithms... 7^(3x - 1) = 5^(x - 1) what is x?

    • one year ago
  22. RaphaelFilgueiras Group Title
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    |dw:1372138198267:dw|

    • one year ago
  23. mbloodworth Group Title
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    so would that be 12.33, -3.09, or .08?

    • one year ago
  24. RaphaelFilgueiras Group Title
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    lol, let me see

    • one year ago
  25. mbloodworth Group Title
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    you're awesome lol

    • one year ago
  26. RaphaelFilgueiras Group Title
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    ~0.08

    • one year ago
  27. mbloodworth Group Title
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    thanks a billion

    • one year ago
  28. RaphaelFilgueiras Group Title
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    yw

    • one year ago
  29. mbloodworth Group Title
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    i wish i could pay you to help me lol

    • one year ago
  30. RaphaelFilgueiras Group Title
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    i wish it too lol

    • one year ago
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