A ball id thrown in the air at an initial velocity of 18 meters per second from an initial height of 10 meters. the equation that models the path of the ball is given by h=4.9^2+18t+10.When does the ball it the water. 4.16 seconds 2.4 seconds 1.56 seconds 12 seconds

Triangle xyz has vertices x(1,3), y(0,0)

Point r divides in the ratio 1 : 3. if the x-coordinate of r is -1 and the x-coordinate of p is -3, what is the x-coordinate of q? a. b. 3 c. 5 d. 6 e. -9

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.