With the given net force, find the missing force C (Need ASAP!)

Write the fraction 9/50 as a decimal if needed round to the nearest hundredth

What can you determine about the solutions of this system

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?