Answer:
Time t = 1.39 seconds
Step-by-step explanation:
Given;
Initial velocity v = 20 ft/sec
height equation;
h = -16t^2 + 20t + 6
How long does it take for the disc to be caught 3 feet off the ground;
At this point h = 3
Substituting h = 3 into the height equation;
3 = -16t^2 + 20t + 6
-16t^2 + 20t + 6 - 3 = 0
-16t^2 + 20t + 3 = 0
Solving the quadratic equation;
t = 1.39 or t = -0.14
Since t cannot be negative;
Time t = 1.39 seconds
3/4=3/4
Cada criança recebe 3/4 litros de leite.
Answer:
420 seconds
Step-by-step explanation:
(60 seconds in a minute, 60 x 7 = 420)
#Nova
9514 1404 393
Answer:
C. 2c+12
Step-by-step explanation:
"12 more than 2 times the number of cats" means "12 + 2c", where c is the number of cats.
To get 2 times, we multiply by 2. To get 12 more, we add 12.
