Which ratio is equivalent to 12:20?
a) 3:5
b) 20:12
c) 3:10
d) 2:3

Ten times the square of a non-zero number is eqaul to ninety times the number

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab