All categories

4 years ago

How to know a function from a non function

2 answers:

4 0

The set x is called the domain, the set y is called the codomain, and. The set of elements that gets pointed to in y ( the actual values produced by the function) is called the range.

aliya0001 [1]4 years ago

3 0

One key distinction between a function and a non function is that for a function each x value must have its own unique y value.

You might be interested in

Which value of x makes the inequality 2(8 – x) < 4 true? A. x = –16 B. x = –9 C. x = 4 D. x = 10

myrzilka [38]

Answer:

Step-by-step explanation:

If we plug in any negative number as x, the result will always be greater than 4, which rules out answers A and B

lets try plugging in 4 as x to test answer C:

2(8-4)

2(4)= 8

8 is greater than 4, therefore C is wrong.

Lets try 10 as X (answer D):

2(8-10)

2(-2)

-4

We know that -4 is less than 4, therefore it makes the inequality true! :)

6 0

3 years ago

Read 2 more answers

What is this answer?

TiliK225 [7]

Answer:

Your answer is

Mark my answer as brainlist . I need that urgently . Folow me for more answer.

Step-by-step explanation:

7 0

3 years ago

The Institute of Education Sciences measures the high school dropout rate as the percentage of 16- through 24-year-olds who are

STALIN [3.7K]

Answer:

We conclude that the proportion of dropouts has changed from the historical value of 0.081.

Step-by-step explanation:

We are given that in 2009, the high school dropout rate was 8.1%. A polling company recently took a survey of 1000 people between the ages of 16 and 24 and found 6.5% of them are high school dropouts.

The polling company would like to determine whether the proportion of dropouts has changed from the historical value of 0.081.

Let p = proportion of school dropouts rate

SO, Null Hypothesis, $H_0$ : p = 0.081 {means that the proportion of dropouts has not changed from the historical value of 0.081}

Alternate Hypothesis, $H_A$ : p $\neq$ 0.081 {means that the proportion of dropouts has changed from the historical value of 0.081}

The test statistics that will be used here is One-sample z proportion statistics;

T.S. = $\frac{\hat p-p}{{\sqrt{\frac{\hat p(1-\hat p)}{n} } } } }$ ~ N(0,1)

where, $\hat p$ = sample proportion of high school dropout rate = 6.5%

n = sample of people = 1000

So, test statistics = $\frac{0.065-0.081}{{\sqrt{\frac{0.065(1-0.065)}{1000} } } } }$

= -2.05

Also, P-value is given by the following formula;

P-value = P(Z < -2.05) = 1 - P(Z $\leq$ 2.05)

= 1 - 0.97982 = 0.0202 or 2.02%

Now at 5% significance level, the z table gives critical values between -1.96 and 1.96 for two-tailed test. Since our test statistics does not lies within the range of critical values of z so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region.

Therefore, we conclude that the proportion of dropouts has changed from the historical value of 0.081.

7 0

4 years ago

The cross section of rectangular prism A measures 3 units by 2 units. The cross section of triangular prism B has a base that me

mamaluj [8]

Answer:

Volume A= one third

Step-by-step explanation:

Use volume B

6 0

4 years ago

Find a when b = 6 and c =13/2

son4ous [18]

The value of variable a, when b = 6 and c =13/2 as given in the task content is; a = 2.5.

<h3>What is the value of a when b = 6 and c =13/2?</h3>

It follows from the task content that the value of the variable, a in discuss be determined by means of the equation which relates all three variables;

a² + b² = c²

a² +6² = (13/2)²

a² = 42.25 - 36

a² = 6.25

a = 2.5

Ultimately, the value of variable a, when b = 6 and c =13/2 as given in the task content is; a = 2.5.

Read more on evaluating expressions;

brainly.com/question/3590570

#SPJ1

3 0

2 years ago