Answer:
30 s
Step-by-step explanation:
When the ball hits the ground h=0. To find the time t when this happens we must solve the equation h=0.
●h= 0
● -12t^2+360t =0
● t(-12t +360) = 0
● t = 0 or -12t +360 =0
● t=0 or -12t = -360
● t=0 or 12t =360
● t=0 or t=360/12
● t=0 or t= 30
The equation has two solutions.
The ball was fired with an initial speed of 800 feet per second so it cannot hit the ground at t=0.
So the ball hits the ground after 30 s.
Answer:Peanut oil freezes at a higher temperature because 3.1°C > -20°C
Answer:
I guess you are a futarian
Step-by-step explanation:
Answer 9/7 = 3/4 & 10/25= 2/5
Answer:
b and c
Step-by-step explanation:
looking at the markings
