document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=251316>Question 251316</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve the problem. Round to the nearest tenth, if necessary.<BR>\n" );
document.write( "A rock falls from a tower that is 432 feet high. As it is falling, it's height is given by the formula h= 432- 16t^2. How many seconds will it take for the rock to hit the ground (h=0)? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #183286 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=183286\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Solve the problem. Round to the nearest tenth, if necessary.<BR>\n" );
document.write( "A rock falls from a tower that is 432 feet high. As it is falling, it's height is given by the formula h= 432- 16t^2.<BR>\n" );
document.write( " How many seconds will it take for the rock to hit the ground (h=0)?<BR>\n" );
document.write( ":<BR>\n" );
document.write( "432- 16t^2 = 0<BR>\n" );
document.write( "-16t^2 = -432<BR>\n" );
document.write( "Multiply both sides by -1<BR>\n" );
document.write( " 16t^2 = 432<BR>\n" );
document.write( " t^2 = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=432%2F16 ALIGN=MIDDLE  ALT=\"432%2F16\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " t^2 = 27<BR>\n" );
document.write( " t = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%2827%29 ALIGN=MIDDLE  ALT=\"sqrt%2827%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " t = 5.2 sec<BR>\n" );
document.write( ";<BR>\n" );
document.write( ";<BR>\n" );
document.write( "Check solution on calc:<BR>\n" );
document.write( "Enter -16(5.2^2) + 432 = -.6 ~ 0 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );