document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=187106>Question 187106</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A picture 10 inches by 19 inches is to be mounted on a piece of matboard so that there is an even amount of mat all around the picture. How wide will the border be if the area of the mounted picture is 400 square inches? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #140275 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=140275\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (10+2x)(19+2x)=400<BR>\n" );
document.write( "190+20x+38x+4x^2=400<BR>\n" );
document.write( "4x^2+58x+190-400=0<BR>\n" );
document.write( "4x^2+58x-210=0<BR>\n" );
document.write( "(4x+70)(x-3)=0<BR>\n" );
document.write( "x-3=0<BR>\n" );
document.write( "x=3 in. is the ans. for the width of the border.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( "(10+2*3)(19*283)=400<BR>\n" );
document.write( "(10+6)(19+6)=400<BR>\n" );
document.write( "16*25=400<BR>\n" );
document.write( "400=400\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );