A ball is thrown upwards into the air from the top of a building can be represented by the equations y = -3x2 + x + 10, where y is the height of the ball in meter from the
ground at time, x seconds;

a. What is the height of the ball at the time it is thrown?

b. How many seconds after being thrown will the ball hit the ground?

What is the image of c for a 90° counterclockwise rotation about a? (3, 7) (-1, 3) (7, 3)

If we pull out the middle player of team a and the fourth player of the team b. what will be the force of team a and team b? what is their sum of forces

Match the following reasons with the statements given to create the proof. 1. do = ob, ao = oc sas 2. doc = aob given 3. triangle cod congruent to triangle aob vertical angles are equal. 4. 1 = 2, ab = dc if two sides = and ||, then a parallelogram. 5. ab||dc if alternate interior angles =, then lines parallel. 6. abcd is a parallelogram cpcte