ElectricPavlov

-(1/2) = (-1)/2 = 1/(-2) = -1/2

  I think you have to look at the worst case scenario

  You COULD draw  13 red in a row, then 10 yellow in a row..... before drawing a third color  : green or blue

           so to ENSURE three clolors you will need to draw 13 + 10 + 1 =  24 draws

Plot. 1,-3.    Draw line from origin to the point.  Positive x axis and this line form your angle.   CSC= 1/sin 

can you calculate sin?

https://web2.0calc.com/questions/help-me-asap-please_12#r1

Well we know from Guest that total time was 5 hours

   total distance was 180 + 180 = 360 km

Avg speed =   360km/5hr = .........    km/hr

The 'a' s   cancel and you have     3x = 102   divide both sides by 3

                                                        x = 34

1/3  + 1/S = 1/2    Solve for 'S'     Sean's time to do the job alone

b

a = 1/2 b

c = .8 ( 1/2 b + b)    summed = 81

b + 1/2 b   + .8 (1/2b + b) = 81     solve for b

20 per cubic meter   /  3.28³    =.......

4^3x = (4²)^2x+1

equate the exponents

3x = 2(2x+1)

3x = 4x+2

x = -2