four cheerleaders had mastered 1/2 of thier dance rountine. However, Sadie was behind. She had only mastered 1/2 of what the other four cheerleaders had mastered. What fraction of the dance rountine had Sadie mastered?

20 da is equal to a. 2,000 cm. b. 2 m. c. 20,000 cm. d. 20,000 mm

Amodel rocket is launched from a roof into a large field. the path of the rocket can be modeled by the equation y = -0.04x^2 + 8.6x + 4.8, where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket above the ground. how far horizontally from its starting point will the rocket land? a. 0.56 m b. 215.56 m c. 431.11 m d. 215.74 m

52 cm radius = diameter = area = circumference = circumfer