This is easy. The formula for the sum of a set of consecutive numbers is, when starting from one, (1+n)n/2. Here n equals 200. 200*201/2=100*201=20100
the sum of the angles in a pentagon is 540. let the measure of the smallest angle be x.
x+x+d+x+2d+x+3d+x+4d=540. x+4d-x=44. 4d=44. d=11. 5x+10d=540. x+2d=108. x+22-108. x=86
86 DEGREES
there are 10 ways I believe.
so actually, the answer is 17
oh c**p you're right. I forgot about that.
ok, now I know. its the sum of 2 geometric series: (1/7+1/7^3+1/7^5...) + (2/7^2+2/7^4+2/7^6...)
the first part is equal to 7/48, the second part is equal to 2/48, and they add to 9/48, which is 3/16.
yayy
argh, still don't know how to do this!
oh, to start on the first one, name the 6 students Anne, Bethany, Cass, David, Evelyn, and Frank. then, just try out different groups of students
im not super sure how to do the first one,
but to start on the second one: 0.93x=43100. x=46344.0860215, which is about $46,344
