About how long does it take an elevator to go from the ground floor to the observation deck at a height of 869 ft?

Write the fraction 9/50 as a decimal if needed round to the nearest hundredth

What is the total area of the figure?

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