Points A, B and C lie on a circle, centre O.
Angle AOC = 142°.
Find the value of y.

Apath 3 m wide runs around the inside of a square park inside 60 m.find the area of the path.pls

1foot = 12 inches; 1 yard = 3 feet

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?