document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1112866>Question 1112866</A>: <I><SPAN STYLE=\"word-break: break-all;\"> your distance from a lightening strike can be estimated using the time between observing the lightening flash and hearing its thunder. a delay of one sec implies a distance of 0.2 mi, 2 sec implies 0.4 mi, and so on. write a simplified explicit formula for this arithmetic sequence and find the distance implied by a 9 sec delay.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #727892 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=727892\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> your distance from a lightening strike can be estimated using the time between observing the lightening flash and hearing its thunder. a delay of one sec implies a distance of 0.2 mi, 2 sec implies 0.4 mi, and so on. write a simplified explicit formula for this arithmetic sequence and find the distance implied by a 9 sec delay.<BR>\n" );
document.write( "-------<BR>\n" );
document.write( "d = t/5 --- d in miles, t in seconds.<BR>\n" );
document.write( "----<BR>\n" );
document.write( "d = 9/5 = 1.8 miles<BR>\n" );
document.write( "====================<BR>\n" );
document.write( "PS  lightning, not lightening<BR>\n" );
document.write( "----<BR>\n" );
document.write( "I prefer using d = 1100t --- d in feet, t in seconds </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );