document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1077165>Question 1077165</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A CROSS-SECTIONAL AREA OF A RECTANGLE DUCT IS 240 SQ. IN.IF THE LENGTH IS 5 INCHES LESS THANT TWICE THE WIDTH, WHAT IS THE LENGTH OF EACH SIDE/ </SPAN>\n" );
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document.write( "length is 2x-5<BR>\n" );
document.write( "their product is 240<BR>\n" );
document.write( "x(2x-5)=240=2x^2-5x<BR>\n" );
document.write( "2x^2-5x-240=0<BR>\n" );
document.write( "x=(1/4)(5+/- sqrt (25+1920)); sqrt 1945=44.10<BR>\n" );
document.write( "x=(1/4)(49.10)=12.28 in<BR>\n" );
document.write( "2x-5=19.55 in length<BR>\n" );
document.write( "product is 240.074, 240 within rounding error </SPAN>\n" );
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