document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=867768>Question 867768</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the average (arithmetic mean) of 10 exam grades is 87.if the highest and lowest grades are removed from the set, the average of the remaining 8 exam grades is 90. what was the average of the 2 exam grades that were removed? \r<BR>\n" );
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document.write( "circle A has a circumference of 4pi, and circle b has a circumference of 8pi. if the circles intersect at two points , what is a possible distance from the center of circle A to the center of circle B? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #523191 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=523191\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the average (arithmetic mean) of 10 exam grades is 87.if the highest and lowest grades are removed from the set, the average of the remaining 8 exam grades is 90. what was the average of the 2 exam grades that were removed?<BR>\n" );
document.write( "Let h = the high grade<BR>\n" );
document.write( "let L = the lowest grade<BR>\n" );
document.write( "the other 8 average 90<BR>\n" );
document.write( "the equation<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28L+%2B+8%2890%29+%2B+h%29%2F10 ALIGN=MIDDLE  ALT=\"%28L+%2B+8%2890%29+%2B+h%29%2F10\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 87<BR>\n" );
document.write( "multiply both sides by 10<BR>\n" );
document.write( "L + 720 + h = 870<BR>\n" );
document.write( "L + h = 870 - 720<BR>\n" );
document.write( "L + h = 150<BR>\n" );
document.write( "therefore: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=150%2F2 ALIGN=MIDDLE  ALT=\"150%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 75 is the average of the 2 removed grades<BR>\n" );
document.write( ":\r<BR>\n" );
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document.write( "circle A has a circumference of 4pi, and circle b has a circumference of 8pi. if the circles intersect at two points , what is a possible distance from the center of circle A to the center of circle B?<BR>\n" );
document.write( "Find the radius of Circle A<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2pi%2Ar ALIGN=MIDDLE  ALT=\"2pi%2Ar\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4pi ALIGN=MIDDLE  ALT=\"4pi\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "2r = r<BR>\n" );
document.write( "r = 2<BR>\n" );
document.write( "Find the radius of Circle b<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2pi%2Ar ALIGN=MIDDLE  ALT=\"2pi%2Ar\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8pi ALIGN=MIDDLE  ALT=\"8pi\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "r = 4<BR>\n" );
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document.write( "Place A's center on the circumference of b, the centers would be 4 units apart </SPAN>\n" );
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