Answer:
h = -0.0166t^2 + 30.
Step-by-step explanation:
The graph of the flight is a parabola which opens down and is symmetrical about the y axis, passes through the x axis at -42.5 and 42.5 and has a vertex at (0, 30).
So we have -a(t^2) + 30 = 0 where t is the time
(42.5)^2 * -a = -30 (42.5 as its 1/2 * 85).
a = 30/2806.25
= 0.01661
So the equation is height h = -0.0166t^2 + 30
It'll be 3/4 lbs I'm pretty sure...
For this case we have the following expression:

We must rewrite both sides of the equation.
For this, we use the distributive property.
We have then:

Adding similar terms we have:

We observe that we have two equal equations.
Therefore, the equations intersect for any value of x.
Thus, the equation has infinite solutions.
Answer:
infinitely many
Step-by-step explanation:
Identity the variable:
Initial Velocity is 35.
Initial Height is 204
Final Height is 0.
What looking for the time.
So we have

Use Quadratic Formula,

A is -16, B is 35 , C is 204.
So we have




The positve solution is

So the answer is 4.83 seconds
236.750422375 is the most exact answer round it if you have to