A marble is drawn at random first from an urn containing 4 black and 4 white marbles and then from an urn containing 6 black and 2 white marbles. what is the probability of drawing 2 black marbles?​

What is the frequency of the sinusoidal graph?

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)

What is the rate for one gallon of gasoline