Answer:
Cheeeeseeeeii
Step-by-step explanation:
Cheeeeseee
Answer is D. I got -6 and -2 in my answer
Answer:
<h2>The mean is 26666.67 and the standard deviation is 372919430.33.</h2>
Step-by-step explanation:
The mean means the average of the numbers.
The mean will be
.
The differences of the earnings from the mean are 1666.67, 26997.33, 33997.33.
Squaring the numbers we get, 2777788.89, 728855827.13, 1155818447.12.
We need to find the mean of the above numbers to get the standard deviation.
Thus, the standard deviation is
.
If I assume you meant

Then the answer is at 4 minutes. This is just the vertex form of the parabola which is
where (h,k) is the vertex. h = 4 so the vertex is at 4 in the x-axis, or in the context of the problem it means at 4 minutes.