document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1077862>Question 1077862</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In 1991, hikers in the Tyrolean Alps of Europe made a remarkable discovery. They found an<BR>\n" );
document.write( "almost perfectly preserved body of a prehistoric man, whom scientists named Ötzi. Carbon<BR>\n" );
document.write( "dating of samples from the site established the time of Ötzi’s demise at approximately 5,300<BR>\n" );
document.write( "years ago. What percentage of the original carbon-14 in Ötzi’s body was remaining in 1991? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #692372 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=692372\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> C14 has a half-life of 5730 years<BR>\n" );
document.write( "that means that we can find k<BR>\n" );
document.write( "(1/2)=e^(-k*5730)<BR>\n" );
document.write( "-0.693=-5730k<BR>\n" );
document.write( "k=0.00012<BR>\n" );
document.write( "fraction=e^(-5300*k)=e^(-0.6401)=0.5267<BR>\n" );
document.write( "52.67% </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );