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3 years ago

Simplify. Identify any x-values for which the expression is undefined. 4x^6/2x-6

1 answer:

6 0

The expression is undefined whenever the denominator is equal to zero. So just set the denominator to zero.

2x - 6 = 0

2x = 6

x = 3

The expression is undefined whenever x=3

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What is used to repair big brass band instruments

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3 years ago

The calculated average of a data set best describes which of the following? (4 points) Group of answer choices Mean Median Mode

OleMash [197]

Answer:

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Step-by-step explanation:

Mean means average in a set of data

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2 years ago

A test is used to assess readiness for college. In a recent year, the mean test score was 20.3 and the standard deviation was 4

Vlada [557]

Answer:

$\mu = 20.3$

$\sigma = 4.9$

And we can find the limits in order to consider values as significantly low and high like this:

$Low\leq \mu -2 \sigma= 20.3- 2*4.9 = 10.5$

$High\geq \mu +2 \sigma= 20.3+ 2*4.9 = 30.1$

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

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".

Solution to the problem

For this case we can consider a value to be significantly low if we have that the z score is lower or equal to - 2 and we can consider a value to be significantly high if its z score is higher tor equal to 2.

For this case we have the mean and the deviation given:

$\mu = 20.3$

$\sigma = 4.9$

And we can find the limits in order to consider values as significantly low and high like this:

$Low \leq \mu -2 \sigma= 20.3- 2*4.9 = 10.5$

$High\geq \mu +2 \sigma= 20.3+ 2*4.9 = 30.1$

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2 years ago

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Answer:

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Step-by-step explanation:

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2 years ago

In the video Mouse Count, Miss Ashley read a book about a snake that captured mice and placed them one-by- one in a jar for his

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Based on the fact that the snake was placing the mice one - by - one into a jar, this is A. Combining sets.

<h3>What does combining sets entail?</h3>

When sets are combined, it means that numbers from a certain set of variables are combined with those from another set.

The snake had captured the mice separately which means they were in different sets. Putting them into one jar means they are being combined so this is combining sets.

Find out more on number and operations standards at brainly.com/question/20628271.

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1 year ago