Posted by afo on Friday, December 4, 2009 at 1:12pm.
2. Mrs. young has her 18 students seated in a circle. They are evenly
spaced and numbered in order. which student is directly opposite these three students?
.student#1?
.student#5?
.student#18?

math  drwls, Friday, December 4, 2009 at 2:02pm
Draw a picture and figure it out. Put students at 20 degree increments around the circle. The largest number minus the smallest, across from each other, must equal 9.

math  Anonymous, Friday, December 4, 2009 at 8:55pm
#1=9
#5=12
#18=8

math  tchrwill, Saturday, December 5, 2009 at 10:54am
Just another thought.
N = number of students equally spaced around the circle and numbered sequentially.
The student number opposite a given student number is defined by Sopp = Sg +/ N/2 depending on whether the given student number is less/more tan N/2.
The student opposite student #1 = 1 + 18/2 = #10.
The student opposite student #5 = 5 + 18/2 = #14.
The student opposite student #18 is 18  18/2 = 9.

math  lexi, Wednesday, March 3, 2010 at 5:01pm
vnidsjvnbsdifb wsgyswrgywerygwb GYw
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