Answer:
d.
Step-by-step explanation:
Here is an answer I found on the internet (kudos to investopedia.com)
If a Z-score is 0, it indicates that the data point's score is identical to the mean score.
In other words, it's saying that a z-score of zero has a standard deviation of zero.
The answer should be C. 3
15x+40=115
15x+40-40=115-40
15x=75
15/15 x=75/15
x= 5
The answer is 176 because 86+86=176
