Which system of equations can be graphed to find the solution(s) to 2-9x=x/2-1

What are the constants in this expression? -10.6+9/10+2/5m-2.4n+3m

Write an expression that has three terms and simplifies to 4x - 7. identify the coefficient(s) and constant(s) in your expression

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?