document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1145065>Question 1145065</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If someone could help me find the answer. I have been doing this problem over and over. <BR>\n" );
document.write( "A ball is thrown from an initial height of 2 meters with an initial upward velocity of 9 m/s. The balls height “h” (in meters) after “t” seconds is given by the following. <BR>\n" );
document.write( "H=2+9t-5t squared<BR>\n" );
document.write( "Find all values of “t” for which the balls height is 4 meters.   </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #766241 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13208)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=766241\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "What part of the problem do you need help with?<br><BR>\n" );
document.write( "You are given a formula for the height h as a function of time t:<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h+=+2%2B9t-5t%5E2 ALIGN=MIDDLE  ALT=\"h+=+2%2B9t-5t%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "You are then given a height (4m) and asked to find the times t when the ball is that height:<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4+=+2%2B9t-5t%5E2 ALIGN=MIDDLE  ALT=\"4+=+2%2B9t-5t%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "That's a quadratic equation.  Put it in standard form and solve by your favorite method.<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5t%5E2-9t%2B2+=+0 ALIGN=MIDDLE  ALT=\"5t%5E2-9t%2B2+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "That one will factor....<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%285t-1%29%28t-2%29+=+0 ALIGN=MIDDLE  ALT=\"%285t-1%29%28t-2%29+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "Can you finish?<br><BR>\n" );
document.write( "(If you weren't able to see that the quadratic was factorable, you can always solve any quadratic equation using the quadratic formula....) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );