document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=141587>Question 141587</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Math tutors I don't know how to do this..thank you<BR>\n" );
document.write( "Find an equation of variation where y varies jointly as x and z and		 	inversely as the square of w and y=20 when x=-0.5, z=4, and w=5.<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 #103151 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=103151\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find an equation of variation where y varies jointly as x and z and inversely as the square of w and y=20 when x=-0.5, z=4, and w=5.\r<BR>\n" );
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document.write( "y kxz/w^2<BR>\n" );
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document.write( "Find \"k\":<BR>\n" );
document.write( "20 = k*-0.5*4/5^2<BR>\n" );
document.write( "20 = -2k/25<BR>\n" );
document.write( "400 = -2k<BR>\n" );
document.write( "k = -200<BR>\n" );
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document.write( "EQUATION:<BR>\n" );
document.write( "y = -200xz/w^2<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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