document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=274698>Question 274698</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Two ships leave port at the same time. One sails south at 15mph and the other sails east at 2o mph. Find a function that models the distance (D) between the ships in terms of the time (T) in hours elasped since thier departure.\r<BR>\n" );
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document.write( "I have solved in the followinf way and don't understand where I've gone wrong. I'm coming up with a different answer than what's in my textbook.\r<BR>\n" );
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document.write( "(By Pathagorean Therom)\r<BR>\n" );
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document.write( "D= 15(t) squared + 20(t) squared.\r<BR>\n" );
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document.write( "D(T) = 35(t) squared.\r<BR>\n" );
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document.write( "My textbook says that the answer is D(T) = 25T.\r<BR>\n" );
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document.write( "How are they getting this solution? Where am I going wrong? Please help! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #200425 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=200425\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Two ships leave port at the same time. One sails south at 15mph and the other sails east at 2o mph. Find a function that models the distance (D) between the ships in terms of the time (T) in hours elasped since thier departure. <BR>\n" );
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document.write( "Draw the picture.<BR>\n" );
document.write( "East distance = 20t<BR>\n" );
document.write( "South distance = 15t<BR>\n" );
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document.write( "Using Pythagoras:<BR>\n" );
document.write( "D^2 = (20t)^2 + (15t)^2<BR>\n" );
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document.write( "D^2 = 400t^2 + 225t^2<BR>\n" );
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document.write( "D^2 = 625t^2<BR>\n" );
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document.write( "D = 25t<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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