document.write( "Question 135889: This question is from my College Algebra Class Notes and Work Guide. It deals with Cramer's Rule.\r
\n" ); document.write( "\n" ); document.write( "{-3 4 -4}
\n" ); document.write( "{-3 K -1} = 58
\n" ); document.write( "{1 4 -2}\r
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\n" ); document.write( "\n" ); document.write( "The numbers in the braquet, are all in one large bracket and then they all equal 58. I'm just not sure where to do with it.
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Algebra.Com's Answer #99552 by solver91311(24713)\"\" \"About 
You can put this solution on YOUR website!
I suspect you are supposed to solve for K.\r
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\n" ); document.write( "\n" ); document.write( "\"%28matrix%283%2C3%2C-3%2C4%2C-4%2C-3%2CK%2C-1%2C1%2C4%2C-2%29%29=58\"\r
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\n" ); document.write( "\n" ); document.write( "To calculate the value of a 3X3 determinant, create a 5X3 matrix by repeating the first two columns to the left of the original 3\r
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\n" ); document.write( "\n" ); document.write( "\"%28matrix%283%2C5%2C-3%2C4%2C-4%2C-3%2C4%2C-3%2CK%2C-1%2C-3%2CK%2C1%2C4%2C-2%2C1%2C4%29%29\"\r
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\n" ); document.write( "\n" ); document.write( "Next you perform the following calculation:
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\n" ); document.write( "\n" ); document.write( "The three complete 3-factor diagonal products down right summed minus the three complete 3-factor diagonal products up right summed.\r
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\n" ); document.write( "\n" ); document.write( "In your case:\r
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\n" ); document.write( "\n" ); document.write( "You can check the arithmetic yourself, but it reduces to \"10K%2B8\", but you were given that the determinant = 58, so:\r
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\n" ); document.write( "\n" ); document.write( "\"10K%2B8=58\"
\n" ); document.write( "\"10K=50\"
\n" ); document.write( "\"K=5\"\r
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