document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=30016>Question 30016</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The equation (((h=-16^2-32t+320))), gives the height of a ball, thrown downward from the top of a 320ft building with an initial velocity of 32ft/sec. Find the time it takes for the ball to reach a height 160ft. Heres what I have so far, h=160, 160=16t^2+32t+320,160=0,16t^2+32t-320=0,divide by 16,<BR>\n" );
document.write( "leaving t^2+2t-20, using the quadratic formula t=b(+or-)radical sign (-2)^2-4(1)(20)/2=0, 2(+or-)radical sign 4+80/2, so the answer I get is 2+ radical sign,84/2, and 2- radical sign 84/2. My math book says the answer is 2.317seconds, but does not show how to get there. Thanks, <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #16803 by </B><A HREF=/tutors/aboutme.mpl?userid=Cintchr><B>Cintchr(481)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Cintchr><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=16803\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I see your first mistake ...\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+160=16t%5E2%2B32t-320+ ALIGN=MIDDLE  ALT=\"+160=16t%5E2%2B32t-320+\"   DISABLED_style= \"max-width:90%; height:auto;\" > subtract 160 from both sides<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+0+=+16t%5E2%2B32t-highlight%28160%29+ ALIGN=MIDDLE  ALT=\"+0+=+16t%5E2%2B32t-highlight%28160%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > You left it as 320<BR>\n" );
document.write( "simple little mistakes like that will kill you.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+0+=+16t%5E2%2B32t-160+ ALIGN=MIDDLE  ALT=\"+0+=+16t%5E2%2B32t-160+\"   DISABLED_style= \"max-width:90%; height:auto;\" > divide by 16<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+0+=+t%5E2+%2B+2t+-+10+ ALIGN=MIDDLE  ALT=\"+0+=+t%5E2+%2B+2t+-+10+\"   DISABLED_style= \"max-width:90%; height:auto;\" > use the quadratic ...<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+ ALIGN=MIDDLE  ALT=\"+x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+%28-2+%2B-+sqrt%28+2%5E2-4%2A1%2A%28-10%29+%29%29%2F%282%2A1%29+ ALIGN=MIDDLE  ALT=\"+x+=+%28-2+%2B-+sqrt%28+2%5E2-4%2A1%2A%28-10%29+%29%29%2F%282%2A1%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+%28-2+%2B-+sqrt%28+4-4%2A1%2A%28-10%29+%29%29%2F%282%2A1%29+ ALIGN=MIDDLE  ALT=\"+x+=+%28-2+%2B-+sqrt%28+4-4%2A1%2A%28-10%29+%29%29%2F%282%2A1%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+%28-2+%2B-+sqrt%28+4%2B40+%29%29%2F%282%29+ ALIGN=MIDDLE  ALT=\"+x+=+%28-2+%2B-+sqrt%28+4%2B40+%29%29%2F%282%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+%28-2+%2B-+sqrt%28+44+%29%29%2F%282%29+ ALIGN=MIDDLE  ALT=\"+x+=+%28-2+%2B-+sqrt%28+44+%29%29%2F%282%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+%28-2+%2B-+2sqrt%28+11+%29%29%2F%282%29+ ALIGN=MIDDLE  ALT=\"+x+=+%28-2+%2B-+2sqrt%28+11+%29%29%2F%282%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > divide by 2<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+%28-1+%2B-+1sqrt%28+11+%29%29+ ALIGN=MIDDLE  ALT=\"+x+=+%28-1+%2B-+1sqrt%28+11+%29%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > assuming ONLY the possitive root ...<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+%28-1+%2B+1sqrt%28+11+%29%29+ ALIGN=MIDDLE  ALT=\"+x+=+%28-1+%2B+1sqrt%28+11+%29%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > root out 11 = 3.31662 ......<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+-1+%2B+3.31662+ ALIGN=MIDDLE  ALT=\"+x+=+-1+%2B+3.31662+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+2.317+ ALIGN=MIDDLE  ALT=\"+x+=+2.317+\"   DISABLED_style= \"max-width:90%; height:auto;\" > rounded to the nearest thousandth </SPAN>\n" );
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