When the ball hits the ground, the height is 0.
0 = 100 - 16t²
0 = (10 - 4t)(10 + 4t)
0 = 10 - 4t or 0 = 10 + 4t
4t = 10 or -4t = 10
t =
or t = 
Time cannot be negative (unless you have a time machine) so disregard 
Answer: t =
= 2.5 seconds
Answer:

Step-by-step explanation:
Solve like a normal equation by isolating the variable and then dividing by the coefficient.

Answer:
(7,6)
Step-by-step explanation:
plz mark as brainliest if it helps
Answer:
haha funny lel he made a funny
Answer:
for what?
Step-by-step explanation: