document.write( "Question 655343: M is the midpoint of segment AB. Find the coordinates of B if the coordinates of A are (-2,5) and the coordinates of M are (8,-12). \n" ); document.write( "
Algebra.Com's Answer #409084 by lwsshak3(11628)\"\" \"About 
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M is the midpoint of segment AB. Find the coordinates of B if the coordinates of A are (-2,5) and the coordinates of M are (8,-12).
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\n" ); document.write( "midpoint formula: ((x1+x2)/2, (y1+y2)/2)
\n" ); document.write( "(8,-12)=((x1-2)/2,(y1+5)/2)
\n" ); document.write( "..
\n" ); document.write( "(x1-2)/2=8
\n" ); document.write( "x1-2=16
\n" ); document.write( "x1=18
\n" ); document.write( "..
\n" ); document.write( "(y1+5)/2=-12
\n" ); document.write( "y1+5=-24
\n" ); document.write( "y1=-29
\n" ); document.write( "...
\n" ); document.write( "coordinates of B: (18,-29)
\n" ); document.write( "Check:
\n" ); document.write( "((x1-2)/2,(y1+5)/2)
\n" ); document.write( "=((18-2)/2,(-29+5)/2)
\n" ); document.write( "=(16/2,-24/2)
\n" ); document.write( "=(8,-12)
\n" ); document.write( "
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