a bird drops a stick to the ground from a height of 60ft. the function h =-16t^2+60 gives the stick approximate height h above the ground ,in the feet, after t seconds. at what time does the stick hit the ground plz show your work

Which approach to the theory-and-research cycle does the following sequence reflect: (1) specific observations suggest generalizations, (2) generalizations produce a tentative theory, (3) the theory is tested through the formation of hypotheses, and (4) hypotheses may provide suggestions for additional observations?

The sum of two numbers is 86, and their difference is 20. find the two numbers

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes