It’s rational, for a number to be rational you have to be able to write it as a fraction and you can write 0.515115111511115111115... as a fraction.
Answer:

Step-by-step explanation:
we know that
The scale factor on a map is equal to

so
by proportion
Find how many miles are in the real life
inches apart on the map

So we know $8.50 per hour
One-time fee of $15 for uniform
x hours per week
y=8.5x-15
We have that
[<span>22,37,49,15,92]
step 1
</span>First add all the variables up.
[22+37+49+15+92] = 215
step 2
Then divide the answer by how many variables there are.
215 divide by 5 = 43
the answer is
the mean is 43
Answer: <u>Last option</u>

Step-by-step explanation:
The z-scores give us information about how many standard deviations from the mean the data are. This difference can be negative, if the data are n deviations to the left of the mean, or it can be positive if the data are n deviations to the right of the mean.
To calculate the Z scores, we calculate the difference between the value of the data and the mean and then divide this difference by the standard deviation.
so
.
Where x is the value of the data, μ is the mean and σ is the standard deviation
In this case
:
μ = 12 $/h
= 2 $/h
We need to calculate the Z-scores for
and 
Then for
:
.
Then for
:
.
Therefore the answer is:
