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3 years ago

What is the domain of the function graphed below???? PLEASE HELP

Mathematics

2 answers:

Agata [3.3K]3 years ago

6 0

You need to look at the x values when you calculate that.

There is a line which goes from -2 to 0. Another line at 0 to 4 and the last line is 7 to infinity.

You can combine the first two and get B) (-2, 4] and [7, infinity)

sasho [114]3 years ago

3 0

The domain of the graph is $\boxed{\left({ - 2,4}\right]{\text{ and }}\left[ {7,\infty }\right)}$ . Option (b) is correct.

Further explanation:

Domain is a set of all the possible values of the function. The values at which the function is defined is known as domain.

Range is a set of values that the function takes.

The output values of the function are known as range and the input values on which function is defined is known as the domain of the function.

Explanation:

The x coordinates are the domain of the function and the y coordinates are the range of the function.

The included value of the function is denoted by the solid circle and in the interval it is represented by close interval “ $\left[{}\right]$ ”.

The values that are not included in the function are denoted by the hollow circle and in the interval is is denoted by “ $\left({}\right)$ ”.

From the graph it has been observed the -2 is not included in the domain, 4 is included in the domain as well 7 is also included in the domain.

The domain of the graph is $\boxed{\left({ - 2,4}\right]{\text{ and }}\left[{7,\infty }\right)}$ .

Option (a) is not correct as the domain of the graph is $\boxed{\left({ - 2,4}\right]{\text{ and }}\left[{7,\infty }\right)}$ .

Option (b) is correct.

Option (c) is not correct.

Option (d) is not correct.

Learn more:

1. Learn more about inverse of the function brainly.com/question/1632445.

2. Learn more about equation of circle brainly.com/question/1506955.

3. Learn more about range and domain of the function brainly.com/question/3412497

Answer details:

Grade: Middle School

Subject: Mathematics

Chapter: Functions

Keywords: range, domain, codomain, relation, function, graph, coordinates, close interval, open interval, values.

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3 years ago

If two points on line l above have coordinates (0, A) and (2, −3), and the slope of the line is A, then what is the value of A?

Vlada [557]

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A = -1

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6 0

2 years ago

Cindy was asked by her teacher to subtract 3 from a certain number and then divide the result by 6. Instead, she subtracted 6 an

Leokris [45]

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3 years ago

Read 2 more answers

Two coworkers commute from the same building. They are interested in whether or not there is any variation in the time it takes

jenyasd209 [6]

Answer:

Step-by-step explanation:

Hello!

You have two samples.

Sample 1 (time that takes one commute of worker 1)

n₁= 20

S₁²= 12.2

Sample 2 (time that takes one commute of worker 2)

n₂= 20

S₂²= 16.9

The hypothesis is that the first coworker is more consistent with his commute times, this means that the variability of his commute times is less than the variability of the commute times of worker 2. With this in mind, the hypothesis for a variance ratio test is:

H₀: σ₁² ≥ σ₂²

H₁:: σ₁² < σ₂²

α: 0.10

The statistic for this test is:

F= (S₁²/S₂²) * (σ₁²/σ₂²) ~ F $_{n1-1;n2-1}$

The test is one-tailed (left) with just one critical value:

$F_{n_1-1;n_2-1;\alpha } = \frac{1}{F_{n_2-1;n_1-1;1-\alpha }} = \frac{1}{F_{19;19;0.90}} = \frac{1}{1.82} =0.549$

(The F-table I use only has the values for high probabilities so I've used a conversion method to obtain the value for the small probability)

Your decision rule is:

If F ≤ 0.549, you reject the null hypothesis.

if F > 0.549, you support the null hypothesis.

The calculated value:

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Since the calculated F-value is greater than the critical value, the decision is to not reject the null hypothesis. So you can say that the variability of the commute times of worker 1 is less than the variability of the commute times of worker 2.

I hope you have a SUPER day!

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