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masha68 [24]
3 years ago
14

Calculate the Average of...

Mathematics
2 answers:
Leno4ka [110]3 years ago
6 0
The average of a group of numbers can be found by dividing their sum by the size of the group. In this case, each problem involves two numbers, so the pair would be added and then halved.

a. 3 + 43 = 46
46 / 2 = 23
b. (-7.5) + 7.5 = 0
0 / 2 = 0
c. (-8) + 7 = (-1)
(-1) / 2 = (-1/2)
lesantik [10]3 years ago
3 0
You add them and then divide by how many numbers there are.

a. (3+43)/2 = 23
b. 0
c. -1
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hjlf

Answer:

The answer is below

Step-by-step explanation:

The z score is a score used to determine the number of standard deviations by which the raw score is above or below the mean, it is given by the equation:

z=\frac{x-\mu}{\sigma} \\\\\mu=mean, \sigma=standard\ deviation,x=raw\ score\\\\for\ a\ sample\ n:\\\\z=\frac{x-\mu}{\sigma/\sqrt{n} }

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3 years ago
How many solutions exist for the given equation?
zmey [24]
<h3> Answer </h3>

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<h3>Step by step</h3>

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Answer:-5

Step-by-step explanation:

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