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
Answer:
John bought 15 apples which costed $0.75 each. How much were the apples in total?
If he has 25 and he gets 5 dollars per week he has 40 dollars in 3 weeks!
Answer:
I got 3/5 I don't know if its correct but if so your welcome
Step-by-step explanation: