document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1181972>Question 1181972</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A soccer ball is kicked in the air from the stadium. The height, h, in feet, of the ball can be modeled by the equation h = -16t2 + 34t + 15 where t is the time in seconds. When will the ball hit the ground? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #811922 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=811922\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> h(t)=-16t^2+34t+15<BR>\n" );
document.write( "set it equal to 0, the ground.<BR>\n" );
document.write( "may rewrite as <BR>\n" );
document.write( "16t^2-34t-15=0, multiplying by -1<BR>\n" );
document.write( "t=(1/32)(34+/-sqrt(2116))<BR>\n" );
document.write( "=(1/32)(80), only positive root of 2.5 seconds.\r<BR>\n" );
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