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maw [93]
3 years ago
6

Which relation is a function?

Mathematics
2 answers:
sesenic [268]3 years ago
8 0

The relation shown in the 2nd diagram is a function.  The reason for this is that one and only one y-value is associated with each x-value.  

Note that this is not true of the first diagram.  If x=0, there are two separate y vaues associated: -1 and 2.  This clearly states that the first diagram does not represent a function.


Tatiana [17]3 years ago
3 0

Of the provided graphs, the second would be the correct answer.

Functions occur when the input only has one possible output (though the output can be recieved through multiple inputs)

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Answer:

7.64% probability that they spend less than $160 on back-to-college electronics

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 237, \sigma = 54

Probability that they spend less than $160 on back-to-college electronics

This is the pvalue of Z when X = 160. So

Z = \frac{X - \mu}{\sigma}

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Z = -1.43

Z = -1.43 has a pvalue of 0.0763

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3 years ago
A mother is 1 and 3/4 times as tall as her son. Her son is 3 feet tall. How tall is the mother?
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Answer:

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<em />

Answer:  The mom is 5 feet 3 inches

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