CPhill

The number of characters  is given  by :  [17 - 6 ] x  2  = 11 x 2 = 22

Here is the proof of this.....first note.....that only in a circle with an even number of characters can they be evenly spaced such that every character has a character directly across from him/her.

Between the 6th and 17th characters, there are 10 characters....and each of these characters will have a counterpart directly across from him/her.   Then, that will be 20 characters. And adding the 6th and 17th chracters makes 22 total characters.

Height  = x   and base edge (side) =  2x - 3...so we have....

Volume = (1/3)*(area of the base) *(height)  = (1/3)*(side)^2*(height)=(1/3)*(2x -3)^2*(x) =

(1/3)*((2x -3)*(2x -3)* x  =  (1/3)*(4x^2 - 12x + 9)*x   = [4x^3 - 12x^2 + 9x] /3    cubic units

No prob !!!!

After 3 hours the one flying North has traveled 3r miles

And the one flying South has traveled 3(2r) miles  = 6r miles

So....they are   3r + 6r = 9r miles apart after 3 hours

4.5-1.5(6m+2)=6    multiply through by 10 to clear the decimals

45 - 15(6m + 2)  = 60    subtract 45 from each side

-15(6m + 2)  = 15     divide both sides by -15

6m + 2  = -1      subtract 2 from both sides

6m = -3     divide both sides by 6

m = -3/6 = -1/2 

Let C be the cost per member.....so we have....

C = [Total Cost] / [ Number of players on the team]

C = $350 / 10

C = $35   per member

x^2+5x= -2x-12    add 2x, 12 to both sides

x^2 + 7x + 12 =  0      factor

(x + 3)( x + 4)= 0    and setting each factor to 0, we have that x = -3 or x = -4

56/46 = 28/23  = 1 + 5/23