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FromTheMoon [43]
4 years ago
13

Which set of ordered pairs represents a function?

Mathematics
2 answers:
Grace [21]4 years ago
6 0

Answer:

<h2>B {(0, 0), (1, 2), (2, 4), (3, 4)}</h2>

Step-by-step explanation:

First of all, we have to remember what's a function.

A function is actually a relation between two sets, where to every element of the first set (domain) is assigned ONLY ONE element of the second set (range).

If the relation assigns more than one range element to a domain element, such relation won't be a function.

So, in this case, we just have to see which set of ordered pairs is really a function.

You can observe that choice B.  {(0, 0), (1, 2), (2, 4), (3, 4)}, represents a function, because to every domain element there's assigned only one range element. For x=0, there's y=0, x=1 with y=2, x=2 with y=4 and x=3 with y=4.

Therefore, the answer is B.

Bess [88]4 years ago
3 0
C, if the function rule is x + 1
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Answer: the bottom rectangle is 21 square units

The top triangles are each 6 square units

Step-by-step explanation:

Do 6 times 3.5 to find area of rectangle

Then do 3 times 4 divided by 2 for each of the top triangles

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3 years ago
Read 2 more answers
Can someone please help me with this math question? It should be attached. <br> Thanks!
Ad libitum [116K]
If you multiple the net by 2, you will get 2720, and dividing it from 940, you will get 35%. B is the correct answer. :)
8 0
3 years ago
Round to the nearest tenth<br> ∛-25
Novay_Z [31]
Here we see that the number 27 is closer to 30 than 20. Here we cannot see whether 25 is closer to 20 or to 30. If the digit following the rounding place is 0, 1, 2, 3, or 4, we round down. If the digit following the roundingplace is 5, 6, 7, 8, or 9, we round up.
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3 years ago
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denis-greek [22]

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Step-by-step explanation:

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4 0
3 years ago
A graduate student majoring in linguistics is interested in studying the number of students in her college who are bilingual. Of
Eddi Din [679]

Answer:

48.41% probability that 17 or fewer of them are bilingual.

Step-by-step explanation:

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

E(X) = np

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

Normal probability distribution

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.

When we are approximating a binomial distribution to a normal one, we have that \mu = E(X), \sigma = \sqrt{V(X)}.

In this problem, we have that:

n = 50, p = \frac{466}{1320} = 0.3530

So

\mu = E(X) = np = 50*0.3530 = 17.65

\sigma = \sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{50*0.3530*0.6470} = 3.38

Probability that 17 or fewer of them are bilingual.

Using continuity correction, this is P(X \leq 17 + 0.5) = P(X \leq 17.5), which is the pvalue of Z when X = 17.5. So

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

Z = \frac{17.5 - 17.65}{3.38}

Z = -0.04

Z = -0.04 has a pvalue of 0.4841

48.41% probability that 17 or fewer of them are bilingual.

8 0
4 years ago
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