Triangle x y z is shown. angle z w x is a right angle. an altitude is drawn from point w to point y on side z x to form a right angle. the length of w y is 4, the length of y x is a, the length of z y is 3, the length of z w is c, and the length of w x is b. what is the value of a? 5 units 5 and one-third units 6 and two-thirds units 7 units

Arestaurant gives out a scratch-off card to every customer. the probability that a customer will win a prize from a scratch-off card is 25%. design and conduct a simulation using random numbers to find the experimental probability that a customer will need more than 3 cards in order to win a prize. justify the model for your simulation, and conduct at least 10 trials.

What expression is equivalent to 42x-56y

How can you tell when x and y are not directly proportional?