document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=121685>Question 121685</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can you explain how to do these problems?  thanks \r<BR>\n" );
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document.write( "19. the second angle of a triangle is two times as large as the first. The third angle is 10 more than the second angle. Find the measure of the first angle.\r<BR>\n" );
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document.write( "20. The perimeter of a rectangular writing pad is 28 inches. The length is 1 inch less than twice the width. Find the width. \r<BR>\n" );
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document.write( "thanks again  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #89372 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=89372\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 19. Let's call the angles A1, A2, A3. <BR>\n" );
document.write( "1.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A2=2%2AA1 ALIGN=MIDDLE  ALT=\"A2=2%2AA1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "2.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A3=A2%2B10=2%2AA1%2B10 ALIGN=MIDDLE  ALT=\"A3=A2%2B10=2%2AA1%2B10\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "From your triangle knowledge you also know that the sum of the angles of a triangle equals 180 degrees.<BR>\n" );
document.write( "3.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A1%2BA2%2BA3=180 ALIGN=MIDDLE  ALT=\"A1%2BA2%2BA3=180\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Now substitute your values from equation 1 and 2 into equation 3.<BR>\n" );
document.write( "3.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A1%2BA2%2BA3=180 ALIGN=MIDDLE  ALT=\"A1%2BA2%2BA3=180\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A1%2B%282%2AA1%29%2B%282%2AA1%2B10%29=180 ALIGN=MIDDLE  ALT=\"A1%2B%282%2AA1%29%2B%282%2AA1%2B10%29=180\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5%2AA1%2B10=180 ALIGN=MIDDLE  ALT=\"5%2AA1%2B10=180\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5%2AA1=170 ALIGN=MIDDLE  ALT=\"5%2AA1=170\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28A1=34%29 ALIGN=MIDDLE  ALT=\"highlight%28A1=34%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "From 1,<BR>\n" );
document.write( "1.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A2=2%2AA1 ALIGN=MIDDLE  ALT=\"A2=2%2AA1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A2=2%2A34 ALIGN=MIDDLE  ALT=\"A2=2%2A34\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28A2=68%29 ALIGN=MIDDLE  ALT=\"highlight%28A2=68%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "From 2,<BR>\n" );
document.write( "2.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A3=A2%2B10 ALIGN=MIDDLE  ALT=\"A3=A2%2B10\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A3=68%2B10 ALIGN=MIDDLE  ALT=\"A3=68%2B10\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28A3=78%29 ALIGN=MIDDLE  ALT=\"highlight%28A3=78%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ".<BR>\n" );
document.write( ".<BR>\n" );
document.write( ".<BR>\n" );
document.write( "20. The perimeter of a rectangular writing pad is 28 inches. The length is 1 inch less than twice the width. Find the width. <BR>\n" );
document.write( "1.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P=2W%2B2L=28 ALIGN=MIDDLE  ALT=\"P=2W%2B2L=28\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "2.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=L=2W-1 ALIGN=MIDDLE  ALT=\"L=2W-1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Substitute 2 into 1 and solve for W.<BR>\n" );
document.write( "1.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2W%2B2L=28 ALIGN=MIDDLE  ALT=\"2W%2B2L=28\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2W%2B2%282W-1%29=28 ALIGN=MIDDLE  ALT=\"2W%2B2%282W-1%29=28\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2W%2B4W-2=28 ALIGN=MIDDLE  ALT=\"2W%2B4W-2=28\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=6W-2=28 ALIGN=MIDDLE  ALT=\"6W-2=28\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=6W=30 ALIGN=MIDDLE  ALT=\"6W=30\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28W=5%29 ALIGN=MIDDLE  ALT=\"highlight%28W=5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "From 2,<BR>\n" );
document.write( "2.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=L=2W-1 ALIGN=MIDDLE  ALT=\"L=2W-1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=L=2%285%29-1 ALIGN=MIDDLE  ALT=\"L=2%285%29-1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=L=10-1 ALIGN=MIDDLE  ALT=\"L=10-1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28L=9%29 ALIGN=MIDDLE  ALT=\"highlight%28L=9%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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