document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=787013>Question 787013</A>: <I><SPAN STYLE=\"word-break: break-all;\"> You and your friend part at an intersection. You drive off north at a constant speed, and your friend drives east at a speed that is 6 mph higher. After 2 hours the distance between you and your friend is 161.44 miles. You have been driving at  _______________mph. (Round to the nearest mile). </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #478037 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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/cgi-bin/show-face.mpl?user=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=478037\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I am driving at x mph<BR>\n" );
document.write( "friend is driving at (x+6) mph\r<BR>\n" );
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document.write( "After 2 hours\r<BR>\n" );
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document.write( "you have driven 2x miles<BR>\n" );
document.write( "your friend 2(x+6) miles\r<BR>\n" );
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document.write( "I , my friend and the starting point form a right triangle \r<BR>\n" );
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document.write( "Apply Pythagoras theorem\r<BR>\n" );
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document.write( "(2x)^2+(2(x+6))^2=161.44^2\r<BR>\n" );
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document.write( "4x^2+4(x^2+12x+36)=161.44^2\r<BR>\n" );
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document.write( "4x^2+4x^2+48x+144=26062.87\r<BR>\n" );
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document.write( "8x^2+48x=26,062.87-144\r<BR>\n" );
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document.write( "8x^2+48x-25918.87=0\r<BR>\n" );
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document.write( "a=	8	,	b=	48	,	c=	-25918.87<BR>\n" );
document.write( "							<BR>\n" );
document.write( "b^2-4ac=	2304	+	829403.84				<BR>\n" );
document.write( "b^2-4ac=	831707.84						<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%09sqrt%28%09831707.84%09%29=%09911.98%09 ALIGN=MIDDLE  ALT=\"%09sqrt%28%09831707.84%09%29=%09911.98%09\"   DISABLED_style= \"max-width:90%; height:auto;\" >		<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29 ALIGN=MIDDLE  ALT=\"x=%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >							<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x1=%28-b%2Bsqrt%28b%5E2-4ac%29%29%2F%282a%29 ALIGN=MIDDLE  ALT=\"x1=%28-b%2Bsqrt%28b%5E2-4ac%29%29%2F%282a%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >							<BR>\n" );
document.write( "x1=(	-48	+	911.98	)/	16		<BR>\n" );
document.write( "x1=	54.00						<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x2=%28-b-sqrt%28b%5E2-4ac%29%29%2F%282a%29 ALIGN=MIDDLE  ALT=\"x2=%28-b-sqrt%28b%5E2-4ac%29%29%2F%282a%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >							<BR>\n" );
document.write( "x2=(	-48	-911.98	) /	16			<BR>\n" );
document.write( "x2=	-60.00						<BR>\n" );
document.write( "Ignore negative value							<BR>\n" );
document.write( "	speed	54	mph				<BR>\n" );
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document.write( "m.ananth@hotmail.ca							\r<BR>\n" );
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document.write( " </SPAN>\n" );
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