The answer is 3.5. use cross product multiplication
Answer:
probably t=40-3h cause of simple math if you don't understand I suggest using khan academy
Answer:
t = 0.293 s and 14.52 s
Step-by-step explanation:
The heights of the ball in feet is given by the equation as follows :

Where t is the number of seconds after the ball was thrown.
We need to find is the ball 18 ft above the moon's surface.
Put S = 18 ft

It is a quadratic equation. Its solution is given by :

So, the ball is at first 0.293 s and then 14.52 s above the Moon's surface.
12.3 is the answer i think
SIN(x) = .7547
X = INVERSE-SIN(.7547)
X = 49.0 degrees