There are 5 red marbles, 8 blue marbles, and 12 green marbles in a bag. What is the experimental probability of randomly drawing a green marble

How to do this , and can some one explain

The sum of the squares of two numbers is 8 . the product of the two numbers is 4. find the numbers.

Desmond wants to sell his car that he paid $8,000 for 2 years ago. the car depreciated, or decreased in value, at a constant rate each month over a 2-year period. if x represents the monthly depreciation amount, which expression shows how much desmond can sell his car for today? \ 8,000 + 24x 8,000 - 24x 8,000 + 2x 8,000 - 2x