There are 4 boys and 16 girls planning the next school dance. What is the ratio of boys to girls planning the school dance?

In a school 2/3 of the students study a language of those who study a language 2/5 study french

How do you convert 1.27 to a percentage

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