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3 years ago

Find the domain and range of each relation. Then determine if the relation is a function.

Mathematics

1 answer:

Vlad [161]3 years ago

3 0

Answer:

There is no fixed domain, meaning it is ongoing

The range is from -1 ≤ x ≤ 3

It is a function

Step-by-step explanation:

Domain refers to the x values. If there was a domain then there would be a dot or a point signalling that there is a fixed domain, however, there are arrows meaning that it will keep going.

The range refers to the y-values. The lowest y-value is -1 and the highest is 3.

It is a function because, when you do the vertical line test, each x-value has its own y-value.

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Marta’s fruit stand sold many oranges on Thursday and twice as many on Friday. All together, on both days, she sold 108. Which e

lianna [129]

Answer:

The equations that represent correctly the problem are A. 108 - 2x = x and D. x + 2x = 108

Step-by-step explanation:

Oranges sold on Thursday = x

Oranges sold on Friday = 2x

Oranges sold on Thursday and Friday = 108

Formula for calculating the value of x :

x + 2x = 108

The correct answer to this question could be alternative D. x + 2x = 108, but if we take a closer look, we'll find that there are other valid options.

A. 108 - 2x = x

- 2x - x = - 108 (changing the positions and putting the variables on one side and the whole number on the other)

x + 2x = 108 (multiplying by - 1 at both sides and it's also correct)

B. 2x - x = 108 (This is incorrect because the sales of Thursday plus the sales of Friday equal to 108, not minus)

C. x + 108 = 2x

x - 2x = - 108 (This is also incorrect because the sales of Thursday plus the sales of Friday equal to 108, not minus)

Now, let's find the solution

x + 2x = 108

3x = 108

X = 36 (Oranges sold on Thursday)

2x = 72 (Oranges sold on Friday)

After doing all this explanations, we found that equations A and D represent the problem.

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3 years ago

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If x < y, then all of the following are true except _____.

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Answer

1. - x < -y

Step by step explanation

When we multiply, add and divide the value remains the same.

But when you change the sign, the inequality direction will be > in this case, otherwise that is not ture.

For instance,

2 < 3

-2 < -3 is not true.

Because -2 is greater than -3

Hope this will help you.

Thank you. :)

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Answer:

Step-by-step explanation:

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2(-5)+8(6)

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Answer:

HI! I think the answer is 4.

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3 years ago

Find the domain and range of each relation. Then determine if the relation is a function. ​

Find the domain and range of each relation. Then determine if the relation is a function.