A parabola has a vertex at (4,2) and a directrix at y = 2 1/3. The Vertex form would be y = a(x - 2)2 + 4. What would be the value of a? (round to
2 decimal plaes)

You decide instead to take the train there. the train will take 135 minutes. convert this into hours and minutes.

Aclass consists of 55% boys and 45% girls. it is observed that 25% of the class are boys and scored an a on the test, and 35% of the class are girls and scored an a on the test. if a student is chosen at random and is found to be a girl, the probability that the student scored an ais

Amuffin recipe, which yields 12 muffins, calls for cup of milk for every 1 cups of flour. the same recipe calls for cup of coconut for every cup of chopped apple. to yield a batch of 30 muffins, how much flour will be needed in the mix?