For the expression:

(9x^2 + 4y^2 -12xy) / (4y^2 - 9x^2)

Find the domain
Find the domain of the simplified expression

Answers

Answer 1

The domain of an expression is the set of input values the expression can take

The domain of the expression is [tex]y \ne 1.5x[/tex]The domain of the simplified expression is [tex]y \ne -1.5x[/tex]

(a) The domain of the expression

The expression is given as:

[tex]\frac{(9x^2 + 4y^2 - 12xy)}{(4y^2 - 9x^2)}[/tex]

Set the denominator to 0, to determine the domain

[tex](4y^2 - 9x^2) = 0[/tex]

Remove brackets

[tex]4y^2 - 9x^2 = 0[/tex]

Add 9x^2 to both sides

[tex]4y^2 = 9x^2[/tex]

Divide both sides by 4

[tex]y^2 = 2.25x^2[/tex]

Take positive square roots of both sides

[tex]y = 1.5x[/tex]

Hence, the domain of the expression is [tex]y \ne 1.5x[/tex]

(b) The domain of the simplified expression

The expression is given as:

[tex]\frac{(9x^2 + 4y^2 - 12xy)}{(4y^2 - 9x^2)}[/tex]

Rewrite as:

[tex]\frac{(9x^2 + 4y^2 - 12xy)}{(4y^2 - 9x^2)} = \frac{(9x^2 - 12xy+ 4y^2 )}{((2y)^2 - (3x)^2)}[/tex]

Expand the numerator

[tex]\frac{(9x^2 + 4y^2 - 12xy)}{(4y^2 - 9x^2)} = \frac{(9x^2 - 6xy - 6xy+ 4y^2 )}{((2y)^2 - (3x)^2)}[/tex]

Factorize the numerator

[tex]\frac{(9x^2 + 4y^2 - 12xy)}{(4y^2 - 9x^2)} = \frac{3x(3x - 2y) - 2y(3x- 2y )}{((2y)^2 - (3x)^2)}[/tex]

Factor out 3x - 2y

[tex]\frac{(9x^2 + 4y^2 - 12xy)}{(4y^2 - 9x^2)} = \frac{(3x - 2y)(3x- 2y )}{((2y)^2 - (3x)^2)}[/tex]

Express the denominator as a difference of two squares

[tex]\frac{(9x^2 + 4y^2 - 12xy)}{(4y^2 - 9x^2)} = \frac{(3x - 2y)(3x- 2y )}{(2y - 3x)(2y + 3x))}[/tex]

Rewrite as:

[tex]\frac{(9x^2 + 4y^2 - 12xy)}{(4y^2 - 9x^2)} = \frac{-(2y - 3x)(3x- 2y )}{(2y - 3x)(2y + 3x))}[/tex]

Cancel out the common term

[tex]\frac{(9x^2 + 4y^2 - 12xy)}{(4y^2 - 9x^2)} = \frac{-(3x- 2y )}{(2y + 3x)}[/tex]

Set the denominator to 0, to determine the domain

[tex]2y + 3x= 0[/tex]

Subtract 3x from both sides

[tex]2y= -3x[/tex]

Divide both sides by 2

[tex]y= -1.5x[/tex]

Hence, the domain of the simplified expression is [tex]y \ne -1.5x[/tex]

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Answer 2

Explanation:

Domain: y does not equal 1.5x and y does not equal -1.5x

Simplifies domain: y does not equal -1.5x


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___________________________________________________________

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The ethical decisions are handled based on the philosophies and compliance as well. Although apple company has been hit with the lawsuits before regarding any property rights, and violations of privacy, they stayed firm on what they believe in.

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The ethical decision is handled based on the philosophies and compliance. Although the apple company has been hit with lawsuits before regarding property rights, and violations of the privacy, they stayed firm on what they actually believe in.

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Answers

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Answer:

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Answer:

Explanation:

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Answers

The answer choice from the article which BEST supports the inference that  the influence of department stores can no  longer be seen in society is the  statement that even though the department stores although once powerful worldwide may be in their  waning days.

As a result of this, we can see that from the list of available options, there is the obvious choice to show that the inference that the department stores which were once powerful and was a favorite destination for shopping could be on decline and their influence greatly reduced.

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Answers

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Tori has been a personal secretary for the Governor for the past three years. During this time, Tori has observed what he considers to be insincerity on the part of the Governor with regards to interest in social causes. It seems to Tori that the Governor is more interested in spending the federal government’s money than actually helping people. Tori reasons, "I think the public would be interested in this hypocrisy. I will contact a publisher to find out how much I might be paid for the story. They may even put me on television. This could be a big win for me!" Which philosophy best depicts Tori's reasoning:

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Answer:

Sinkholes is the correct answer.

A byproduct of both chemical and physical weatherization is: 2. Soil.

Weathering can be defined as both the chemical and physical breakdown of a rock into smaller fragments (pieces) that are referred to as sediments.

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Answers

Answer:

All of these are implications of large trade deficits.

Deficits lead the US dollar to weaken, productivity to plummet, and the nation must spend within its production possibilities curve, all of which are consequences of big US trade deficits. Option D is correct.

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A trade deficit, also known as a negative balance of trade, occurs when a country spends more money than it earns in international commerce with the rest of the world.

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