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Math Help - Help with Matrix Problem

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    Help with Matrix Problem

    Hi, I'm having trouble with this homework problem. Any help would be appreciated. The numbers are in the attachment





    7.
    Find the consumption matrix A and demand vector D0 for this table.
    8.
    Find the production vector X for the consumption matrix A and demand vector D0.
    9.
    If the demand for construction increases by 1 million, how much will the production of the transportation, communication, and utilities sector have to increase to compensate?
    10.
    Which three sectors are most affected by an increase of $1 million of demand for construction?
    11.
    If the entire jth column of the matrix (I - A)-1 is added, the result is the amount of new production in the entire economy caused by an increase of $1 million in demand for the jth sector. How much new production is produced in the entire economy by an increase of $1 million in demand for construction?
    12.
    What would it mean for the (i, j) entry in (I - A)-1 to be zero?
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