Answer:
1. 9.9
2. 63
3. 151.2
4. 3.68
5.4.2
6. 70.4
Step-by-step explanation:
Answer: x=12
Step-by-step explanation:
The slope is 3/1.
Hope this helped
Say that you start from a number
. Then, you subtract
and
from
, which means that the expression is
![x-y-z = x-(y+z)](https://tex.z-dn.net/?f=%20x-y-z%20%3D%20x-%28y%2Bz%29%20)
If we want this expression to be negative, we have
![x-(y+z)](https://tex.z-dn.net/?f=%20x-%28y%2Bz%29%3C0%5Ciff%20x%3Cy%2Bz%20)
So, in order for the expression to be negative, the two numbers we are subtracting, combined, must be more than the starting number.
For example, if we start from 10 and we subtract 4 and then 8, we have
![10-4-8 = 10-12=-2](https://tex.z-dn.net/?f=%2010-4-8%20%3D%2010-12%3D-2%20)
which is negative, because 4 and 8 combined are more than 10
Answer: The times within which 99.73% workers fall are 252.2 and 573.2 minutes.
Explanation:
It is known that to capture approximately 99.73% of the mass (area) of the normal distribution one has to consider +/- standard deviations from the mean.
The mean is 413 minutes and 1 standard deviation is 26.8 minutes. 6 standard deviations are 160.8 minutes.
Therefore the minimum time is 413-160.8=252.2 minutes and the maximum time is 413+160.2=573.2 minutes.
The times within which 99.73% workers fall are 252.2 and 573.2 minutes.