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anonymous

  • one year ago

Two books, A and B, are sold in three stores, X, Y and Z. The number of copies of book A sold in a month is 40, 20, and 60 from stores X, Y, and Z, respectively. The number of copies of book B sold is 10, 70, and 20 from X, Y, and Z, respectively. The profit from the sales of book A is $4, and the profit from the sales of book B is $1 for all the three stores. Which matrix represents the profit from the sales of book A for each store?

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  1. Owlcoffee
    • one year ago
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    So, all you have to do is represent them as a system of equations and then represent it as a matrix using kramer's method.

  2. anonymous
    • one year ago
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    |dw:1435252434169:dw|

  3. Owlcoffee
    • one year ago
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    What?

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