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3 years ago

Look at the following relation. What is the domain and range?

Mathematics

1 answer:

mylen [45]3 years ago

8 0

Answer & Step-by-step explanation:

The domain is the input, and the range is the output.

The domain is also known as the x values and the output as the y values (x,y).

So:

domain: {4, -1, 0, 2}

range: {-4, 3, 5, 8}

:Done

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Christopher’s backyard is shaped like a rectangle with a length of 2x + 5 feet and a width of 4x - 7 feet.

Doss [256]

Answer:

8x² + 6x - 35

Step-by-step explanation:

A = (2x + 5)(4x - 7)

Front: 2x * 4x = 8x²

Outside: 2x * (-7) = -14x

Inside: 5 * 4x = 20x

Last: 5 * -7 = -35

Add up: 8x² - 14x + 20x -35

Simplify: 8x² + 6x - 35

8 0

3 years ago

A recipe requires 3.5 teaspoons of sugar to make a tart. which equation shows the number of teaspoons of sugar, y, needed to mak

tresset_1 [31]

x = 3.5y equation shows the number of teaspoons of sugar, y, needed to make x tarts.

What is the linear equation in two variable?

Any equation which can be put in the form ax + by + c = 0, where a, b and c are real numbers, and a and b are not both zero, is called linear equation in two variable.

According to the given question

A recipe require 3.5 teaspoons of sugar to make a tart.

y represents the number of teaspoons of sugar.

x represents the number of tarts.

Now, for x tart 3.5y teaspoons of sugar required.

⇒ x = 3.5y

Hence, the linear equation in two variable that shows the number of teaspoons of sugar y, needed to make x number or tarts is x = 3.5y.

Learn more about linear equation in two variable.

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8 0

2 years ago

Trey believes there is a correlation between the number of texts sent during class and GPA. He collected data and found that the

vichka [17]

Answer: First Option

The slope is −0.4. Starting at 3.8, the GPA will decrease by 0.4 for every text sent in class.

Step-by-step explanation:

The equation of a line has the following form

$y=mx+b$

Where m is the slope of the line and b is the intercept with the axis of the y

In this case, the equation is:

$y = 3.8 - 0.4x\\\\y=-0.4x+3.8$

Observe that

$m = -0.4\\b = 3.8$

So if x represents the number of texts sent during classes, this means that $x\geq 0$

When x increases by one unit then y decreases -0.4. For example when $x=1$ then $y=3.8-0.4=3.4$

Then the greatest value it can take the GPA is 3.8. Therefore we can say that the function starts at y = 3.8.

The answer is the first option

5 0

3 years ago

Read 2 more answers

IT IS A ANGLE QUESTION PLS HELP

gogolik [260]

Answer:

I think its a cute angle im not sure

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3 years ago

Find the length width and height of the two pictures then find the volume

Anastasy [175]

First one is 40 cube square and the second one is 125 cube square.

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3 years ago