document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=150425>Question 150425</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0073268623/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Sailboat speed. The sail area-displacement ration S provides a measure of the sail power available to drive a boat.  For a boat with a displacement of d pounds and a sail area of A square feet.<BR>\n" );
document.write( "                S = 16Ad¯&#8532;.\r<BR>\n" );
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document.write( "a)       Find S to the nearest tenth for the Tartan 4100, which has a sail area of 810 square feet and a displacement of 23,245 pounds.\r<BR>\n" );
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document.write( "b)	Solve the formula for d.<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 #110382 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=110382\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> For a boat with a displacement of d pounds and a sail area of A square feet.<BR>\n" );
document.write( "S = 16Ad¯&#8532;. <BR>\n" );
document.write( "a) Find S to the nearest tenth for the Tartan 4100, which has a sail area of 810 square feet and a displacement of 23,245 pounds.<BR>\n" );
document.write( "----<BR>\n" );
document.write( "S = 16*810*23245^(-2/3) = 15.912<BR>\n" );
document.write( "--------------------<BR>\n" );
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document.write( "b) Solve the formula for d.<BR>\n" );
document.write( "S = 16*A*d^(-2/3)<BR>\n" );
document.write( "Divide both sides by 16A<BR>\n" );
document.write( "d^(-2/3) = S/(16A)<BR>\n" );
document.write( "Raise both sides to the (-3/2) power to get:<BR>\n" );
document.write( "d = [S/(16A)]^(-3/2)<BR>\n" );
document.write( "=====================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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