document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=112901>Question 112901</A>: <I><SPAN STYLE=\"word-break: break-all;\"> This is a homework assignment not in the book. Ra226 has a half-life of1600 years. How many grams of Ra226 will be present after 2000 years if there are 20g present initially? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #82285 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=82285\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the formula you need is x=a((1/2)^(t/h))\r<BR>\n" );
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document.write( "where x=amount remaining; a=initial amount; t=time; h=half-life\r<BR>\n" );
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document.write( "x=20((1/2)^(1.25)) </SPAN>\n" );
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