document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=86274>Question 86274</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The height h in feet of an object after t seconds is given by the function h=-16t^2+60t+9....<BR>\n" );
document.write( "How long will it take the object to hit the ground? Round your answer to the nearest thousandth.... </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #62370 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=62370\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The height h in feet of an object after t seconds is given by the function <BR>\n" );
document.write( "h=-16t^2+60t+9....<BR>\n" );
document.write( "How long will it take the object to hit the ground? Round your answer to the nearest thousandth....<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "When it hits the ground its height is zero.<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "-16t^2+60t+9 = 0<BR>\n" );
document.write( "t = [-60+-sqrt(60^2-4*-16*9)]/-32\r<BR>\n" );
document.write( "\n" );
document.write( "t = [-60+-sqrt(4176)]/-32<BR>\n" );
document.write( "Find the positive answer:<BR>\n" );
document.write( "t = 3.8944 seconds<BR>\n" );
document.write( "====================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );