A box contains 22 widgets 4 of which are defective. If 4 are sold at random find the probability that a all are defective b none are defective

After t seconds, a ball tossed in the air from the ground level reaches a height of h feet given by the equation h = 144t-16t^2. after how many seconds will the ball hit the ground before rebounding?

The graph shows the amount of total rainfall at each hour what was the total rainfall amount after three hours

Plz asap what is the range of the cluster in the scatter plot a. between 4 and 8 years of experience b. between $40,000 and $60,000 c. between 6 and 12 years of experience d. between $10,000 and $60,000