Abag has 8 blue marbles and 4 red marbles. half of the red marbles are made of glass. a marble is selected at random from the bag. what is the probability that it is a red, glass marble?

Lilianna uses 3/4 calories per minute just by sitting. she uses 1 more calorie per minute by walking. lilianna uses a total of 12 1/4 calories walking to the park. lilianna uses the equation, d(.75+1)=12.25 to represent the situation. what does the variable d represent in the equation?

Amaple syrup producer records th amount of sap collected from each of his trees. the line plot shows the results for one day. what is the least amount of sap any one tree produced?

What is the ratio of the length of an object in yards to the length of the same object in miles?