Answer:
1 seconds after being thrown, the stone reaches its max height
Step-by-step explanation:
The parabolic (quadratic) equation is:

Lets expand this in the form
, so we have:

We can say the values of a,b, and c, now to be:
a = -5
b = 10
c = 40
The number of seconds at which the max would occur is given by the point, x, at:

We know a and b, let's find the seconds, x,

Hence,
1 seconds after being thrown, the stone reach its max height
It depends on the shape it may be rotation
You do -2 plus 4. Answer is 2.
Then do 2-(-2) which is 0.
The final answer is 2.
Answer:
less than half
Step-by-step explanation:
13/12 - 7/10 = 23/60