The 2 angles in a complement would be (in degrees) 65 and 25
The system of equations has one solution
There are 100 tens in 1,000
H=0
Therefore:
144t-16t²=0
t (144-16t)=0
We have two equations:
1)
t=0 (when the ball is released)
2)
144-16t=0
-16t=-144
t=-144 / -16=9 (this is the time )
Answer: the ball hit the ground in 9 s.
