document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=282892>Question 282892</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve. Define the variables and give an equation using the variable.\r<BR>\n" );
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document.write( "A ball is dropped from the top of a 576ft. building. Its height h(t) at time t seconds is given by h(t)=-16t^2+576. Determine how long it takes the ball to 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 #205340 by </B><A HREF=/tutors/aboutme.mpl?userid=nyc_function><B>nyc_function(2741)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nyc_function><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=nyc_function><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=205340\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The formula is given.  \r<BR>\n" );
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document.write( "Let h(t) = 0\r<BR>\n" );
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document.write( "Then 0 = -16t^2 + 576\r<BR>\n" );
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document.write( "Now, solve for t.\r<BR>\n" );
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document.write( "I will bring everything to the left side to delete the negative in front of the 16t^2.\r<BR>\n" );
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document.write( "16t^2 - 576 = 0\r<BR>\n" );
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document.write( "16t^2 = 576\r<BR>\n" );
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document.write( "t^2 = 576/16\r<BR>\n" );
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document.write( "t^2 = 36\r<BR>\n" );
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document.write( "t = square root of 36\r<BR>\n" );
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document.write( "t = 6 seconds\r<BR>\n" );
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