Billy stacked 6 pieces of wood on top of one another if each piece was 3/4 of foot tall how tall was his pile

2x - 20 = 32 20 - 3x = 8 6x - 8 = 16 -13 - 3x = -10

With these: 18/36 = 1/? missing number change 1 5/8 to improper fraction. change 19/5 to a mixed number.

Aroulette wheel has 38 slots in which the ball can land. two of the slots are green, 18 are red, and 18 are black. the ball is equally likely to land in any slot. the roulette wheel is going to be spun twice, and the outcomes of the two spins are independent. the probability that it lands one time on red and another time on black in any order is(a) 0.5 (b) 0.25 (c) 0.4488 (d) 0.2244