document.write( "Question 1045419: find the area of a triangle with the vertices ( 7.-9), (-1,6),(-1,-9) \n" ); document.write( "
Algebra.Com's Answer #660835 by advanced_Learner(501)\"\" \"About 
You can put this solution on YOUR website!
let A( 7.-9), B(-1,6),C(-1,-9)
\n" ); document.write( "\"AB\"=\"sqrt%2864%2B225%29\"\r
\n" ); document.write( "\n" ); document.write( "\"AB\"=\"%2817%29\"\r
\n" ); document.write( "\n" ); document.write( "\"BC\"=\"sqrt%280%2B225%29\"
\n" ); document.write( "\"BC\"=\"%2815%29\"\r
\n" ); document.write( "\n" ); document.write( "\"AC\"=\"sqrt%2864%2B0%29\"
\n" ); document.write( "\"AC\"=\"%288%29\"
\n" ); document.write( "Since\"8%5E2%2B15%5E2\"=\"17%5E2\"\r
\n" ); document.write( "\n" ); document.write( "the hypotenus is 17
\n" ); document.write( "\"Area\"=\"1%2F2%2A8%2A15\"
\n" ); document.write( "\"area\"=\"60\"
\n" ); document.write( "
\n" );