document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=67773>Question 67773</A>: <I><SPAN STYLE=\"word-break: break-all;\"> PLEASE HELP ME ANSWER THIS QUESTION,I'M GOING TO TAKE A TEST ON THURSDAY ON PROBLEMS SIMILAR TO THIS ONE AND I DON'T GET IT!!!\r<BR>\n" );
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document.write( "   CONSIDER THE SYSTEM OF EQUATIONS.<BR>\n" );
document.write( "           9X+3Y+Z=10<BR>\n" );
document.write( "          25X+5Y+Z=36<BR>\n" );
document.write( "           4X-2Y+Z=15\r<BR>\n" );
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document.write( "a) REWRITE THIS SYSTEM AS A MATRIX EQUATION.<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #48194 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=48194\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">    CONSIDER THE SYSTEM OF EQUATIONS.<BR>\n" );
document.write( "           9X+3Y+Z=10<BR>\n" );
document.write( "          25X+5Y+Z=36<BR>\n" );
document.write( "           4X-2Y+Z=15\r<BR>\n" );
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document.write( "a) REWRITE THIS SYSTEM AS A MATRIX EQUATION.<BR>\n" );
document.write( " ------------<BR>\n" );
document.write( "Assuming you have a calculator, enter the <BR>\n" );
document.write( "coefficients of the variables into a 3 x 3<BR>\n" );
document.write( "matrix called \"A\".<BR>\n" );
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document.write( "Enter the constants into a 3x1 column matrix<BR>\n" );
document.write( "called \"B\".<BR>\n" );
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document.write( "Call A to your homescreen and hit the \"invert\" <BR>\n" );
document.write( "button.<BR>\n" );
document.write( "Call B to your homescreen to the right of A^-1<BR>\n" );
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document.write( "Multiply A^-1 B to get the solution 3/1 column<BR>\n" );
document.write( "matrix. <BR>\n" );
document.write( "I get: X=6, Y=-35, Z=61<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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