document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=909696>Question 909696</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Copper has a density of 8.96grams per cubic centimeter, while tin has a density of 7.385 grams per cubic centimeter. Both are elements, so these values are pretty solid. The making of bronze, a mix of cooper and (historically) tin to make an alloy stronger than either, is one of the biggest developments in human history. \r<BR>\n" );
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document.write( "1. Lets say you wanted to make a brick of bronze that was exactly 200 cubic centimeters, and has a mass of exactly 1,755 grams. Let c= the number of cubic centimeters of copper, and t= the number of cubic centimeters of tin. Use no other metals. Find equations of two lines that hold this information. Find the values of c and t that make your above equations true. It is okay to have a fraction of a cubic centimeter. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #551997 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39630)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=551997\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%281755%2F200%29%28gram%2Fcc%29=8.775 ALIGN=MIDDLE  ALT=\"%281755%2F200%29%28gram%2Fcc%29=8.775\"   DISABLED_style= \"max-width:90%; height:auto;\" > grams/cc, the required target density of the bronze brick.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28c%2A8.96%2Bt%2A7.385=1755%29 ALIGN=MIDDLE  ALT=\"highlight_green%28c%2A8.96%2Bt%2A7.385=1755%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, grams as specified<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28c%2Bt=200%29 ALIGN=MIDDLE  ALT=\"highlight_green%28c%2Bt=200%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, cubic centimeters as specified\r<BR>\n" );
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document.write( "SOLVING STEPS<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=200-c ALIGN=MIDDLE  ALT=\"t=200-c\"   DISABLED_style= \"max-width:90%; height:auto;\" >;<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8.96c%2B7.385%28200-c%29=1755 ALIGN=MIDDLE  ALT=\"8.96c%2B7.385%28200-c%29=1755\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8.96c%2B1477-7.385c=1755 ALIGN=MIDDLE  ALT=\"8.96c%2B1477-7.385c=1755\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%288.96-7.385%29c=1755-1477 ALIGN=MIDDLE  ALT=\"%288.96-7.385%29c=1755-1477\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.575c=278 ALIGN=MIDDLE  ALT=\"1.575c=278\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=c=278%2F1.575 ALIGN=MIDDLE  ALT=\"c=278%2F1.575\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28c=176.5%29 ALIGN=MIDDLE  ALT=\"highlight_green%28c=176.5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=200-c ALIGN=MIDDLE  ALT=\"t=200-c\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=200-176.5 ALIGN=MIDDLE  ALT=\"t=200-176.5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28t=23.49%29 ALIGN=MIDDLE  ALT=\"highlight_green%28t=23.49%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "The density of the copper, and the volume of brick to make limit the accuracy to three significant figures, so the final results are:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28c=177%29 ALIGN=MIDDLE  ALT=\"highlight%28c=177%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > cc for the copper<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28t=23%29 ALIGN=MIDDLE  ALT=\"highlight%28t=23%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > cc for the tin </SPAN>\n" );
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