3/200 as a decimal and a percent helppp again please

Abag contains 3 red marbles 4 white marbles and 5 blue marbles if one marble is drawn from the bag what is the probability that the marble will be blue

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

The constitution gives congress the power to create federal courts lower than the supreme court higher than the supreme court equal to the supreme court, unaffected by the supreme court.