document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=547914>Question 547914</A>: <I><SPAN STYLE=\"word-break: break-all;\"> One problem on my homework is \"It took 86 hours for joe kittinger<BR>\n" );
document.write( "To cross the Atlantic in his ballon, Rosie O'Grady, a distance of 3543 miles.<BR>\n" );
document.write( "What was the average speed of the ballon ? Round to the nearest tenth .\"<BR>\n" );
document.write( "So i tried to divide 3543 by 86 and came up with 41.1976744 but it seems<BR>\n" );
document.write( "Kind of impossible to round to the nearest tenth . Can you help please ?<BR>\n" );
document.write( "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 #356651 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=356651\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3543+%2F+86+=+41.2+ ALIGN=MIDDLE  ALT=\"+3543+%2F+86+=+41.2+\"   DISABLED_style= \"max-width:90%; height:auto;\" > ( rounded to nearest tenth )<BR>\n" );
document.write( "This problem gets into the subject of<BR>\n" );
document.write( "\" significant figures \"<BR>\n" );
document.write( "Actually, not all the digits after the decimal point are<BR>\n" );
document.write( "really \" significant \". <BR>\n" );
document.write( "Notice the hours is 86 and not 86.3, or 85.9, so<BR>\n" );
document.write( "86 is as close as can be judged<BR>\n" );
document.write( "That is 2 significant figures.<BR>\n" );
document.write( "3543 has 4 significant figures. They could have said<BR>\n" );
document.write( "3543.27. That would have been 6 significant figures<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "The number of significant figures in the answer is<BR>\n" );
document.write( "determined by the least accurate number in the input data,<BR>\n" );
document.write( "so really only 2 figures in answer can be relied on.<BR>\n" );
document.write( "So 3 figures is just fine </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );