document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1025890>Question 1025890</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The half-life of radium is approximately 1600 years. If the present amount of radium in a certain location is 700 grams, how much will remain after 1200 years? Express your answer to the nearest gram\r<BR>\n" );
document.write( "\n" );
document.write( "Please help me get an answer, 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 #641169 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=641169\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  The half-life of radium is approximately 1600 years.<BR>\n" );
document.write( " If the present amount of radium in a certain location is 700 grams, how much will remain after 1200 years?<BR>\n" );
document.write( " Express your answer to the nearest gram<BR>\n" );
document.write( ":<BR>\n" );
document.write( "the formula we will use here: A = Ao*2(-t/h), where<BR>\n" );
document.write( "A = remaining amt after t time<BR>\n" );
document.write( "Ao = initial amt<BR>\n" );
document.write( "h = half-life of substance<BR>\n" );
document.write( "t = time of decay <BR>\n" );
document.write( "In this problem<BR>\n" );
document.write( "A = 700*2(-1200/1600)<BR>\n" );
document.write( "reduce the fraction<BR>\n" );
document.write( "A = 700*2(-3/4)<BR>\n" );
document.write( "using a calc<BR>\n" );
document.write( "A = 700 * .5946<BR>\n" );
document.write( "A = 416 grams<BR>\n" );
document.write( "  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );