document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1028882>Question 1028882</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve by completing the square\r<BR>\n" );
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document.write( "A ball is thrown upward at an initial velocity of 26 ft/sec^2 from a height of 3 ft. Find the approximate length of time(to the nearest tenth of a second) it will take the ball to return to a height of 5 ft. \r<BR>\n" );
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document.write( "USE THIS FORMULA:\r<BR>\n" );
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document.write( "h(t)= -16t^2 + vt + h\r<BR>\n" );
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document.write( "Where V(measured in ft/sec^2) and H(initial height) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #643962 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=643962\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \r<BR>\n" );
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document.write( "There are 2 times when the ball's height is 5 ft. <BR>\n" );
document.write( " On the way up and on the way down. <BR>\n" );
document.write( " So if we plug in 5 for h, we should get 2 values for t <BR>\n" );
document.write( " 5 = 3 +26t -16t^2 \r<BR>\n" );
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document.write( "16t^2-26t+2=0\r<BR>\n" );
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document.write( "Find the roots of the equation by quadratic formula							<BR>\n" );
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document.write( "a=	16	b=	-26	c=	2		<BR>\n" );
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document.write( "b^2-4ac=	676	-	128				<BR>\n" );
document.write( "b^2-4ac=	548			<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%28%09548%09%29 ALIGN=MIDDLE  ALT=\"sqrt%28%09548%09%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >=	23.41<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29 ALIGN=MIDDLE  ALT=\"x=%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >							<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x1=%28-b%2Bsqrt%28b%5E2-4ac%29%29%2F%282a%29 ALIGN=MIDDLE  ALT=\"x1=%28-b%2Bsqrt%28b%5E2-4ac%29%29%2F%282a%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >							<BR>\n" );
document.write( "x1=(	26	+	23.41	)/	32		<BR>\n" );
document.write( "x1=	1.54						<BR>\n" );
document.write( "x2=(	26	-23.41	) /	32			<BR>\n" );
document.write( "x2=	0.08						\r<BR>\n" );
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document.write( "t= 0.08 OR 1.54  </SPAN>\n" );
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