There are 4 red and 8 blue marbles in a bag. Mark draws a blue marble out of the bag and does not replace it Mark draws a second blue marble out of the bag and does not replace it. What is the probability that the next marble he draws will also be blue? ОА. 2 3 B. 3 4 Ос. 3 5 D. 1 6​

Ascientist has 50 grams of a radioactive element. the amount of radioactive element remaining after t days can be determined using the equation (1) after two days the scientist receives a second shipment of 50 grams of the same element. the equation used to represent the amount of shipment 2 remaining after t days is 10) - 50 which of the following is an equivalent form of the expression for the amount remaining in shipment 2? what’s the answer?