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3 years ago

10

Which relation is also a function?

1 answer:

slavikrds [6]3 years ago

6 0

Answer:

Hi san, A relation from a set X to a set Y is called a function if each element of X is related to exactly one element in Y. That is, given an element x in X, there is only one element in Y that x is related to. For example, consider the following sets X and Y.

This should help you a bit.

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One morning, the temperature in Urbana, Illinois, was 15° Fahrenheit. By evening, the temperature had dropped 25° Fahrenheit. Wh

Grace [21]

The temperature started at 15 degrees.

It dropped 25 degrees.

Subtract 25 from 15:

15 - 25 = -10

The temperature was -10 degrees.

5 0

3 years ago

1 1/18 + 3 1/18 + 1 2/9 + 1 2/9

Misha Larkins [42]

Answer:

6.55555555556

Step-by-step explanation:

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3 years ago

Read 2 more answers

1. A trebuchet is a large spring loaded catapult. The spring is attached 23cm on

Rus_ich [418]

Answer:

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Step-by-step explanation:

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3 years ago

The Department of Transportation would like to test the hypothesis that the average age of cars on the road is less than 12 year

puteri [66]

Answer:

$z=\frac{10.6-12}{\frac{4.1}{\sqrt{45}}}=-2.29$

Step-by-step explanation:

information given

$\bar X=10.6$ represent the sample mean

$\sigma=4.1$ represent the population standard deviation

$n=45$ sample size

$\mu_o =12$ represent the value that we want to test

$\alpha=0.05$ represent the significance level for the hypothesis test.

z would represent the statistic

$p_v$ represent the p value for the test

Hypothesis to test

We want to test if the true mean is less than 12, the system of hypothesis would be:

Null hypothesis: $\mu \geq 10$

Alternative hypothesis: $\mu < 10$

The statistic is given by:

$z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}}$ (1)

Replacing the info given we got:

We can replace in formula (1) the info given like this:

$z=\frac{10.6-12}{\frac{4.1}{\sqrt{45}}}=-2.29$

8 0

4 years ago

Which is the equation in Point-slope form of the line with a slope of 2 and passing thru the point (2,1)

KIM [24]

Answer:

y - 1 = 2(x - 2)

General Formulas and Concepts:

<u>Algebra I</u>

Point-Slope Form: y - y₁ = m(x - x₁)

x₁ - x coordinate
y₁ - y coordinate
m - slope

Step-by-step explanation:

<u>Step 1: Define</u>

Slope <em>m</em> = 2

Point (2, 1)

<u>Step 2: Write Equation</u>

Substitute in variables: y - 1 = 2(x - 2)

4 0

3 years ago