Answer:
Step-by-step explanation:
i think this has already been answered
Answer: after 3 seconds
when the ball hit the ground => - 5t² + 14t + 3 = 0
⇔ (5t + 1)(t - 3) = 0
⇔ t = 3 or t = -1/5
but t is a positive integer => t = 3
so the ball will hit the ground after 3 seconds
Step-by-step explanation:
Answer:
-3y
Step-by-step explanation:
-

--> -3
--> -3y
well, I think it's 60 because it prime factors are 2, 3, 5.