My class collected 389 milk jugs. we used 40 jugs. we gave 30 milk to the first graders. how many milk jugs did we have?

What is the measure of angle tvu shown in the diagram below

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

Abus travels 36 miles in 45 minutes. enter the number of miles the bus travels in 60 minutes at this rate.