document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=107859>Question 107859</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0618503072/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> You go 50 km West, then 20 km North.  How many km are you from where you started?\r<BR>\n" );
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document.write( "Can someone explain to me how to slove this question please and thank you. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #78608 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=78608\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Draw the picture:<BR>\n" );
document.write( "You go 50 km West, then 20 km North.  How many km are you from where you started?<BR>\n" );
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document.write( "The picture shows you have two sides of a right angle.<BR>\n" );
document.write( "Connect the beginning point to the point where you end up; <BR>\n" );
document.write( "that is the distance you need to determine.<BR>\n" );
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document.write( "Using Pythagoras:<BR>\n" );
document.write( "hypotenuse^2 = 50^2 + 20^2<BR>\n" );
document.write( "h^2 = 2500 + 400<BR>\n" );
document.write( "h^2 = 2900<BR>\n" );
document.write( "h = sqrt(2900)<BR>\n" );
document.write( "h = 10sqrt(29) which is approximately 53.85 km<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
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