Respuesta :

Answer:

If they played 30 games and won 18, then they lost12, since 30-18 = 12

win:lose

18:12

You can simplify this if you want

18:12

9:6

3:2

BQ)

Marbles:

5 red

3 green

4 yellow

Total marbles = 5 + 3 + 4 = 12.  

The probability of picking a green marble is 3/12, since there are 3 green marbles possible to grab and 12 total.  3/12 can be reduced to 1/4, or .25.  Devon has a 25% chance of picking a green marble.

Step-by-step explanation: