document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1086186>Question 1086186</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Two airplanes leave an airport at the same time and at a 90° angle from each other.Both planes fly at the same altitude, one at 120 mph and the other at 140 mph. To the nearest tenth of a mile, how far are the planes from each other after 3 hours? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #700423 by </B><A HREF=/tutors/aboutme.mpl?userid=htmentor><B>htmentor(1343)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=htmentor><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=htmentor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=700423\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The planes travel at right angles to each other for 3 hours.  <BR>\n" );
document.write( "The distance traveled by plane 1 after 3 hours is 120 mph* 3 h = 360 mi<BR>\n" );
document.write( "The distance traveled by plane 2 after 3 hours is 140*3 = 420 mi<BR>\n" );
document.write( "Their distance apart is the hypotenuse of a right triangle with legs 360 and 420.<BR>\n" );
document.write( "Thus the distance is sqrt(360^2 + 420^2) = 553.2 miles </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );