document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=73125>Question 73125</A>: <I><SPAN STYLE=\"word-break: break-all;\"> can you help me write this system as a matrix equation and solve using an inverse matrix please?...<BR>\n" );
document.write( "s + p + c = 40<BR>\n" );
document.write( "c = 4p<BR>\n" );
document.write( "s = p - 2 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #52389 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=52389\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> solve using an inverse matrix please?...<BR>\n" );
document.write( "s + p + c = 40<BR>\n" );
document.write( "c = 4p<BR>\n" );
document.write( "s = p - 2<BR>\n" );
document.write( "----------<BR>\n" );
document.write( "Rearange equations #2 and #3 to get the variables in the same column:<BR>\n" );
document.write( "s + p + c = 40<BR>\n" );
document.write( "0 +4p - c = 0<BR>\n" );
document.write( "1 - p + 0 =-2<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "Enter the coefficient matrix into your calculator as matrix A:<BR>\n" );
document.write( "1st Row: 1 ; 1; 1<BR>\n" );
document.write( "2nd Row: 0 ; 4; -1<BR>\n" );
document.write( "3rd Row: 1 ;-1; 0\r<BR>\n" );
document.write( "\n" );
document.write( "-------------<BR>\n" );
document.write( "Enter the constants in as a 3x1 matrix called B:<BR>\n" );
document.write( "1st Row: 40<BR>\n" );
document.write( "2nd Row:  0<BR>\n" );
document.write( "3rd Row: -2<BR>\n" );
document.write( "--------------<BR>\n" );
document.write( "Bring A to you home screen<BR>\n" );
document.write( "Hit the \"inverse\" button<BR>\n" );
document.write( "Hit the \"multiply\" button<BR>\n" );
document.write( "Bring B to your home screen to the right of A^-1<BR>\n" );
document.write( "Hit \"enter\" <BR>\n" );
document.write( "You should see a 3x1 array with:<BR>\n" );
document.write( "1st Row : 5  (this is s)<BR>\n" );
document.write( "2nd Row : 7  (this is p)<BR>\n" );
document.write( "3rd Row : 28 (this is c)<BR>\n" );
document.write( "===============\r<BR>\n" );
document.write( "\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );