Mathematics: What is the domain of the relation?

What is the domain of the relation? - id3947174, wolfiewolffromsketch

Ответ:

ThatStudent8769

10.01.2022

Mathematics

The domain of the relation is [(5,16,18,21]

Step-by-step explanation:

we have

[(15,65),(21,70),(18,73),(16,62)]

Remember that

The domain of the relation are the values of x

The range of the relation are the values of y

therefore

The domain is

[(5,21,18,16]

order them from lowest to highest -------> [(5,16,18,21]

The range is

[65,70,73,62]

order them from lowest to highest -------> [62,65,70,73]

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Ответ:

mttttttthhhhhhh551

15.08.2020

Mathematics

56 hours

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form y/x=k or y=kx

Let

x -----> the number of hours

y ----> the amount earned in dollars

This problem represent a proportional relationship between the variable x and the variable y

Find the value of the constant of proportionality k

k=y/x

For (3,27) ----> $k=27/3=9\ \$/h$

For (9,81) ----> $k=81/9=9\ \$/h$

For (21,189) ----> $k=189/21=9\ \$/h$

The constant of proportionality k is 9

The linear equation is

y=9x

For y=$500

substitute in the equation and solve for x

500=9x

Divide by 9 both sides

$x=56\ hours$

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