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2 years ago

What is the domain and range of the following graph?

Mathematics

2 answers:

lys-0071 [83]2 years ago

7 0

Area is all x - values and reach is all y - values. See the entirety of the x qualities and y esteems that are contacting the diagram. Likewise, when there is a circle use enclosure for the stretch documentation

raketka [301]2 years ago

6 0

Answer:

Domain is all x-values and range is all y values. See all of the x values and y values that are touching the graph. Also, when there is a circle/ hole, use parenthesis for the interval notation. Hope it helps!

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marvin the math magician has a problem for you. he wants to buy some magic wands and some magic hats. the wands cost $8 each and

tensa zangetsu [6.8K]

He will pay $131 for all that stuff

7 0

3 years ago

Read 2 more answers

Find the average rate of change of = f(x)= 2x^2-8x from X = 2 to X = 6 . Simplify your answer as much as possible.

erastova [34]

Average rate=delta y/delta x...

c=(72-48-8+16)/(6-2)

c=32/4

c=8

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3 years ago

A random sample of 200 people was taken. 90 of the people in the sample favored Candidate A. We are interested in determining wh

mafiozo [28]

Answer:

a. 1.44

Step-by-step explanation:

We are interested in determining whether or not the proportion of the population in favor of Candidate A is significantly more than 40%.

At the null hypothesis, it is tested if the proportion is of at most 40%, that is:

$H_0: p \leq 0.4$

At the alternative hypothesis, it is tested if the proportion is of more than 40%, that is:

$H_1: p > 0.4$

The test statistic is:

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the value tested at the null hypothesis, $\sigma$ is the standard deviation and n is the size of the sample.

0.4 is tested at the null hypothesis:

This means that $p = 0.4, \sigma = \sqrt{0.4*0.6}$

A random sample of 200 people was taken. 90 of the people in the sample favored Candidate A.

This means that:

$n = 200, X = \frac{90}{200} = 0.45$

Value of the test statistic:

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

$z = \frac{0.45 - 0.4}{\frac{\sqrt{0.4*0.6}}{\sqrt{200}}}$

$z = 1.44$

Thus the correct answer is given by option a.

8 0

3 years ago

Jenna just opened a checking account at the bank. Within the first month, she deposited three checks for $34.98, $51.02, and $51

algol [13]

-7.89, -5.23, -5.22, 34.98, 51.02, 51.22

Lets break it down:
(Rational numbers consist of whole, numbers, integers, and fractions)
Negatives come after 0, so the greater the number gets, the less value it has, opposite of positive numbers.
So since -7.89 is the greatest negative number, it will have the least value.

Hope this helps!

6 0

3 years ago

If a shopkeeper sells an article for $440 and loses 12% on the sale, find his cost price.

worty [1.4K]

Step-by-step explanation:

440÷100×12

52.8

440-52.8

387.2

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4 0

3 years ago