Abag contains eight marbles of equal size and weight. one marble is red, two marbles are white, and five marbles are blue. a marble is taken from the bag two times. each time a marble is taken out, it is not replaced. what is the probability of picking a blue marble both times?

There are 5 blue marbles out of 8.

The first pick would be 5/8

After picking the first marble, there would be 4 blue and 7 marbles.

The second pick would be 4/7.

Picking blue both times would be 5/8 x 4/7 =  5/14

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations:

step-by-step explanation:

4227473658779875563886538705958641728563470543621287463824132573847969p05749365273847906970680574936214