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MULTIPLICATION MATRICES Stock market. Mary and John decided to invest in some of the most reliable communication companies given by the following matrix. The stock

MULTIPLICATION MATRICES Stock market. Mary and John decided to invest in some of the most reliable

communication companies given by the following matrix.

The stock market values are for AT&T $

54,

For TWX $

113,

for IBM $

112

and for GM $

70 .

Using matrix multiplication find the total value of the stock market for Mary and John.

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