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3 years ago

a relation is a set of ordered pairs where the first element is called the ranged while the second element is the domain

Mathematics

1 answer:

tresset_1 [31]3 years ago

4 0

Answer:

False.

Step-by-step explanation:

We have the statement:

"a relation is a set of ordered pairs where the first element is called the ranged while the second element is the domain"

A relation between two sets maps the elements of the first set into elements of the second set, creating an ordered pair.

So we can have a relation that maps elements X, into elements Y, and the ordered pairs will be (X, Y)

Where the set of the elements X is called the domain, and the set of elements Y is called the range.

Then the statement is false.

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Evaluate the expression 2ab^3 + 6a^3 - 4ab^2 when a = 2 and b = 4.

Lady bird [3.3K]

The answer is A) 176

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2 years ago

Whats is the diference of:

grandymaker [24]

Answer:

$2h^2$

Step-by-step explanation:

=> $(10h^4+h^2)-(10h^4-h^2)$

=> $10h^4+h^2-10h^4+h^2$

=> $h^2+h^2$

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3 years ago

A study of recent records of car accidents revealed that average proportion of drivers who were distracted by their phones at th

aksik [14]

Answer:

At least 547 records need to be studied.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence interval $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

Z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

And the margin of error is:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

95% confidence interval

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $z = 1.96$ .

In this problem, we have that:

$M = 0.04, p = 0.35$

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$0.04 = 1.96\sqrt{\frac{0.35*0.65}{n}}$

$0.04\sqrt{n} = 0.93486$

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6 0

3 years ago

HELLO. I NEED HELP ON A HANDFUL OF QUESTIONS. PLEASE HELP.

galben [10]

Question 7: $3945

78,900÷100×5= 3,945

or 789,00×0.05= $3,945

Question 8: I think it may be $675.46 ( but I'm not sure)

$1010 is her annual insurance premium so to find one month we need to divide $1010 by 12

$1010÷12= $84.20

also her annual real estate tax is $938 and to find one month we need to divide this by 12 as well.

$938÷12=$78.20

and in order to find out her combined monthly payment we need to add them all together

$513.12+$84.16+$78.16= $675.46

Question 9: is False

Question 10: I don't know

Hope this helps

5 0

2 years ago

Example of why division is not associative.

pantera1 [17]

The order of division determines the numerator and the denominator and this can effect the value. And example of this:
3/2 = 1.5
2/3 = 0.6667
Whereas, multiplication is not affected by the order:
2 x 3 = 6
3 x 2 = 6

5 0

2 years ago

Read 2 more answers

a relation is a set of ordered pairs where the first element is called the ranged while the second element is the domain​

a relation is a set of ordered pairs where the first element is called the ranged while the second element is the domain