What is 9.78 x 4.84? im so lazy to do it. show the steps

How do you use the additive inverse to evaluate an expression that uses subtraction in a full sentence

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?

How many grams the dog will eat in 3 days?