document.write( "Question 144275: A triangle has vertices D(-5,4), E(3,1) and F(2,-6). Find the area of the triangle.\r
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\n" ); document.write( "help would be greatly appreciated.
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Algebra.Com's Answer #105253 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
Using vectors and determinants, I get an area of 29.5 square units.\r
\n" ); document.write( "\n" ); document.write( "I don't know what \"use linear systems\" means.
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