Hannah will roll a number cube, labeled 1 through 6, 300 times. about how many times could hannah expect to roll a number less than 4?

Which of the following contains a variable?

The domain of the following relation: r: {(3, 5), (8, 6), (2, 1), (8, 6)} is (1 point) no domain exists {1, 5, 6} {3, 8, 2, 8} {2, 3, 8}

What is the measure of angle a and angle c ?