document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=858292>Question 858292</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1.	During a downhill ski race, the distance (in yds) a skier has travelled since leaving the starting gate follows this quadratic equation: d=5t^2+32t+1000  where t is the time in seconds measuring her run. After how many seconds has she skied 2,000yds?\r<BR>\n" );
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document.write( "I have tried this question and keep getting stuck. please help </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #517159 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=517159\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> we are given d=5t^2+32t+1000  and the skier has skied 2000 yards<BR>\n" );
document.write( "2000 = 5t^2+32t+1000 and solve for t<BR>\n" );
document.write( "5t^2+32t-1000 = 0<BR>\n" );
document.write( "use quadratic formula<BR>\n" );
document.write( "t = (-b + square root(b^2 - 4ac)) / 2a = (-32 + square root(32^2 + 20*1000) / 10 = 11.30 seconds<BR>\n" );
document.write( "t = (-b - square root(b^2 - 4ac)) / 2a = (-32 - square root(32^2 + 20*1000) / 10 =  -17.70 seconds<BR>\n" );
document.write( "our answer is t = 11.30 seconds\r<BR>\n" );
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