Answer:
The ball remains in the air for 2.86 seconds.
Step-by-step explanation:
A baseball is hit into the air, and its height above the ground is described by the function
Where H(t) represents the height of the ball t seconds after it is hit.
The ball remains in the air before it hits the ground.
When the ball hits the ground,
So,
The equation may be solved using the quadratic formula.
Where
So,
Since the time cannot be negative, discard the negative value and accept the positive value
Therefore, the ball remains in the air for 2.86 seconds.
I have attached an image of what this would look like, with the arrows.
Hope I helped :)
Answer:
im going to assume it means you need to pick the one that has the coordinates for the place they intersect, and that would be (2.5, 0.5) x-axis comes first and y-axis comes second when writing coordinates.
The given case is an example of permutation problem because the order is important given that you should like the first two songs. The sample space is calculated through the equation,
15P2 = 210
Then, there are 3 songs that you liked, the probability of picking 2 out of them is,
3P2 = 6
Dividing the latter by the earlier result will give us an answer of 1/35.
