document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=106723>Question 106723</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0395676088/algebrahomeworkh>Algebra, structure and meathod, book 1</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Transforming Formulas<BR>\n" );
document.write( "page 166, number 25\r<BR>\n" );
document.write( "\n" );
document.write( "solve the given formula for the variable shown. state the restrictions, if any, for the formula obtained to be meaningful.\r<BR>\n" );
document.write( "\n" );
document.write( "a=180(n-2)all over n; solve for n\r<BR>\n" );
document.write( "\n" );
document.write( "the answer is;<BR>\n" );
document.write( "n=360 all over 180-a; a does not = 0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #77662 by </B><A HREF=/tutors/aboutme.mpl?userid=Earlsdon><B>Earlsdon(6294)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Earlsdon><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=77662\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Your answer is correct but the restriction on a doesn't make sense.<BR>\n" );
document.write( "In the formula: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=n+=+360%2F%28180-a%29 ALIGN=MIDDLE  ALT=\"n+=+360%2F%28180-a%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, if a were zero, you still have a valid formula of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=n+=+360%2F180 ALIGN=MIDDLE  ALT=\"n+=+360%2F180\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=n+=+2 ALIGN=MIDDLE  ALT=\"n+=+2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "What you really should be concerned with in a formula that has a denominator is, what would make the denominator equal to zero.  And the answer here is a = 180.<BR>\n" );
document.write( "If a were equal to 180, then you would have: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=n+=+360%2F%28180-180%29 ALIGN=MIDDLE  ALT=\"n+=+360%2F%28180-180%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=n+=+360%2F0 ALIGN=MIDDLE  ALT=\"n+=+360%2F0\"   DISABLED_style= \"max-width:90%; height:auto;\" > and, as you know, division by zero is not defined.<BR>\n" );
document.write( "So the restriction is: a cannot equal 180 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );