You are running a concession stand at a basketball game. You are selling hot dogs and sodas. Each hot dog costs $5 and each soda costs $1.50. At the end of the night you made a total of $ 130You sold a total of 40 hot dogs and sodas combined. Step-by-step explanation

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years

How can you find the mean absolute deviation (mad) for this set of data?