document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=768215>Question 768215</A>: <I><SPAN STYLE=\"word-break: break-all;\"> can someone help me please\r<BR>\n" );
document.write( "\n" );
document.write( "How much energy, Q, is released by an earthquake with a Richter rating, R, of 8.7? Use the function R = log[Q] - 4.4  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #468154 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=468154\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> How much energy, Q, is released by an earthquake with a Richter rating, R, of 8.7?<BR>\n" );
document.write( " Use the function R = log[Q] - 4.4<BR>\n" );
document.write( "log(Q) - 4.4 = 8.7<BR>\n" );
document.write( "log(Q) = 8.7 + 4.4<BR>\n" );
document.write( "log(Q) = 13.1<BR>\n" );
document.write( "Find the anti-log of 13.1<BR>\n" );
document.write( "Q = 1.26(10^13) joules of energy </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );