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vagabundo [1.1K]
3 years ago
6

What is the first step in writing f(x) = 3x2 + 6x – 8 in vertex form?

Mathematics
1 answer:
notsponge [240]3 years ago
6 0

Answer:

Factor out 3 from the first two terms

Step-by-step explanation:

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Reports on a student’s ACT, SAT, or MCAT usually give the percentile as well as the actual score. The percentile is just the cum
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Answer:

The percentile is calculated with the following probability:

P(X

And using the z score we got:

P(X

So then we can conclude that 31 represent approximately the percentile 81 on the distribution given

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Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the scores of a population, and for this case we know the distribution for X is given by:

X \sim N(25.3,6.5)  

Where \mu=25.3 and \sigma=6.5

And for this case we have a score of 31

The percentile is calculated with the following probability:

P(X

And using the z score we got:

P(X

So then we can conclude that 31 represent approximately the percentile 81 on the distribution given

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3 years ago
5. The value of y varies directly with x, and
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Step-by-step explanation:

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Step-by-step explanation:

If you go 50 more miles after you have gone 100, you have traveled a total of ...

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