document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=873213>Question 873213</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A person travels 10 miles due north, 4 miles due west, 5 miles due north,<BR>\n" );
document.write( "and 12 miles due east. How far is that person from the starting point? </SPAN>\n" );
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document.write( "A person travels 10 miles due north, 4 miles due west, 5 miles due north,<BR>\n" );
document.write( "and 12 miles due east. How far is that person from the starting point?<BR>\n" );
document.write( "A:<BR>\n" );
document.write( "Let the origin be the starting point.<BR>\n" );
document.write( "10 miles due north corresponds to point (0, 10)<BR>\n" );
document.write( "4 miles due west corresponds to point (-4, 10)<BR>\n" );
document.write( "5 miles due north corresponds to point (-4, 15)<BR>\n" );
document.write( "12 miles due east corresponds to point (8, 15)<BR>\n" );
document.write( "The distance between (0,0) and (8,15) using the distance formula is<BR>\n" );
document.write( "d = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%28%2815+-+0%29%5E2+%2B+%288+-+0%29%5E2%29 ALIGN=MIDDLE  ALT=\"sqrt%28%2815+-+0%29%5E2+%2B+%288+-+0%29%5E2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%2817%29 ALIGN=MIDDLE  ALT=\"highlight%2817%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > miles </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );