51, because 39+12=51. You just add both parts of the tree. Please Rate Brainliest.
I think the answer is the third one
The answer is Abecause if you plug in the value es for each function A is the only one the makes it trye
Answer:
hey! been a while since I've answered questions haha
typically I would put an explanation for my answers but this one's pretty straightforward so ¯\_(ツ)_/¯
a) mode is the number that occurs most often in a data set.
b) mean is the average or expected value in the data set
c) median is the value that lies in the midpoint in the data set.
Calculating the z-score provides additional information regarding how each subject did overall as the z-score takes dispersion into account.
<h3>What is a z score?</h3>
Z-score indicates how much a given value differs from the standard deviation. For example, the mean of a test could be a 73 and if a student scored an 85, that's great.
However, if the data is not spread out, that 85 could be the highest in the class by 10 points. That's much more information than just 15 points above the mean. This way you can tell when someone not only did well but did exceptionally well in comparison to his or her peers.
Learn more about z score on:
brainly.com/question/25638875
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