document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1178426>Question 1178426</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello there,\r<BR>\n" );
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document.write( "I've been trying to answer this question but I can't seem to arrive at the correct answer which is supposed to be 17 mph, any help would be much appreciated, thank you.\r<BR>\n" );
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document.write( "Two trains travel at right angles to each other after leaving the same train station at the same time. Two hours later they are 42.80 miles apart. If one travels 4 miles per hour slower than the other, what is the rate of the faster train? (Round your answer to the nearest integer).<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 #807645 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=807645\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \r<BR>\n" );
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document.write( "Their speeds are <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r ALIGN=MIDDLE  ALT=\"r\"   DISABLED_style= \"max-width:90%; height:auto;\" > and<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+r-4 ALIGN=MIDDLE  ALT=\"+r-4\"   DISABLED_style= \"max-width:90%; height:auto;\" >, in miles per hour.<BR>\n" );
document.write( "The distance traveled for each in the <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2 ALIGN=MIDDLE  ALT=\"2\"   DISABLED_style= \"max-width:90%; height:auto;\" > hours are <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2r ALIGN=MIDDLE  ALT=\"2r\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%28r%2B7%29 ALIGN=MIDDLE  ALT=\"2%28r%2B7%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "We know that\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%282x%29%5E2%2B%282%28x-4%29%29%5E2=42.80%5E2+ ALIGN=MIDDLE  ALT=\"%282x%29%5E2%2B%282%28x-4%29%29%5E2=42.80%5E2+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4x%5E2%2B4%28x-4%29%5E2=1831.84 ALIGN=MIDDLE  ALT=\"4x%5E2%2B4%28x-4%29%5E2=1831.84\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4x%5E2%2B4%28x%5E2-8x%2B16%29=1831.84 ALIGN=MIDDLE  ALT=\"4x%5E2%2B4%28x%5E2-8x%2B16%29=1831.84\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4x%5E2%2B4x%5E2-32x%2B64=1831.84 ALIGN=MIDDLE  ALT=\"4x%5E2%2B4x%5E2-32x%2B64=1831.84\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8x%5E2-32x%2B64=1831.84 ALIGN=MIDDLE  ALT=\"8x%5E2-32x%2B64=1831.84\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2-4x%2B8=228.98 ALIGN=MIDDLE  ALT=\"x%5E2-4x%2B8=228.98\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2-4x%2B8-228.98=0 ALIGN=MIDDLE  ALT=\"x%5E2-4x%2B8-228.98=0\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2-4x-220.98=0 ALIGN=MIDDLE  ALT=\"x%5E2-4x-220.98=0\"   DISABLED_style= \"max-width:90%; height:auto;\" >.......using quadratic formula we get\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x ALIGN=MIDDLE  ALT=\"x\"   DISABLED_style= \"max-width:90%; height:auto;\" >≈<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-12.9993 ALIGN=MIDDLE  ALT=\"-12.9993\"   DISABLED_style= \"max-width:90%; height:auto;\" >->disregard negative solution\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x ALIGN=MIDDLE  ALT=\"x\"   DISABLED_style= \"max-width:90%; height:auto;\" >≈<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=16.9993 ALIGN=MIDDLE  ALT=\"16.9993\"   DISABLED_style= \"max-width:90%; height:auto;\" > -> round it <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=17mph ALIGN=MIDDLE  ALT=\"x=17mph\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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