A child is sitting in a tree and is 120 feet off the ground. He tosses a baseball into the air at a vertical velocity of 8 feet per second. After how many seconds does the baseball hit the ground?

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?

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

Yesterday i ran 5 miles. today, i ran 3.7 miles. did my percent increase, decrease or is it a percent error? plz i need