document.write( "Question 64799: please find the distance between (-2,3,1) and (4,5,-1)\r
\n" );
document.write( "\n" );
document.write( "and\r
\n" );
document.write( "\n" );
document.write( "the midpoint of the points (-2,3,1) and (4,5,-1)\r
\n" );
document.write( "\n" );
document.write( "Thanks!
\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #46075 by venugopalramana(3286)![]() ![]() You can put this solution on YOUR website! please find the distance between P(X1,Y1,Z1)=(-2,3,1) and Q(X2,Y2,Z2)=(4,5,-1) \n" ); document.write( "and \n" ); document.write( "the midpoint of the points P(-2,3,1) and Q(4,5,-1) \n" ); document.write( "Thanks! \n" ); document.write( "PQ=SQRT[(X2-X1)^2+(Y2-Y1)^2+(Z2-Z1)^2]=SQRT[(4+2)^2+(5-3)^2+(-1-1)^2] \n" ); document.write( "=SQRT[36+4+4]=SQRT(44)=2SQRT(11) \n" ); document.write( "LET R(X,Y,Z) BE THE MID POINT \n" ); document.write( "X=(X1+X2)/2....ETC. \n" ); document.write( "HENCE R IS \n" ); document.write( "=[(-2+4)/2,(3+5)/2,(1-1)/2] \n" ); document.write( "=(1,4,0) \n" ); document.write( " |