document.write( "Question 1163777: The price of a large pepperoni pizza is $13.45 at New England Pizza, $13.50 at Romeo’s, and $15 at Front Row. These shops charge $6.25, $10.50, and $8, respectively, for a Greek salad. What would each shop charge for two pizzas and a dozen salads? Show how this problem can be solved by forming two suitable matrices and then multiplying them. \n" ); document.write( "
Algebra.Com's Answer #789026 by Theo(13342)\"\" \"About 
You can put this solution on YOUR website!
you would use the dot product to multiply a 3 row 2 column matrix by a 2 row 1 column matrix.\r
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\n" ); document.write( "\n" ); document.write( "your result matrix will be a 3 row 1 column matrix.\r
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\n" ); document.write( "\n" ); document.write( "your two matrices are:\r
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document.write( "first matrix.\r\n" );
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document.write( "13.45      6.25\r\n" );
document.write( "13.50      10.5\r\n" );
document.write( "15         8\r\n" );
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document.write( "second matrix.\r\n" );
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document.write( "2\r\n" );
document.write( "12\r\n" );
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document.write( "result matrix.\r\n" );
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document.write( "101.9\r\n" );
document.write( "153\r\n" );
document.write( "126\r\n" );
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\n" ); document.write( "\n" ); document.write( "the procedure will be as follows:\r
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\n" ); document.write( "\n" ); document.write( "row 1 column 1 of the result matrix is equal to 2 * 13.45 + 12 * 6.25 = 101.9
\n" ); document.write( "row 2 column 1 of the result matrix is equal to 2 * 13.50 + 12 * 10.5 = 153
\n" ); document.write( "row 3 column 1 of the result matrix is equal to 2 * 15 + 12 * 8 = 126\r
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\n" ); document.write( "\n" ); document.write( "here's a matrix multiplication calculator that confirms the results are good.\r
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\n" ); document.write( "\n" ); document.write( "https://matrix.reshish.com/multiplication.php\r
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\n" ); document.write( "\n" ); document.write( "here are the results.\r
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\n" ); document.write( "\n" ); document.write( "here's a reference.\r
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\n" ); document.write( "\n" ); document.write( "https://www.intmath.com/matrices-determinants/matrix-multiplication-examples.php\r
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