A child walks 3/10 of a mile in 1\5 hour. At this rate, how far will the child walk in 1 hour

When 142 is added to a number the result is 64 more then 3 times the number. option 35 37 39 41

If sin(x) = 0 and cos(x) = 1, what is tan(x)?

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