document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=964396>Question 964396</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the half-life of a radioactive isotope is the time it takes for a quantity of the isotope to be reduced to half its initial mass. starting with 165 grams of a radioactive isotope, how much will be left after 3 half-lives? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #589306 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=589306\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> i believe it will be 165 * (1/2)^3 which will be equal to 165 * 1/8 which will be equal to 20.625.\r<BR>\n" );
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document.write( "1/2 of 165 = 82.5<BR>\n" );
document.write( "1/2 of 82.5 = 41.25<BR>\n" );
document.write( "1/2 of 41.25 = 20.625\r<BR>\n" );
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