A,B,C,or D because math is hard

Mathematics

1 answer:

arlik [135]3 years ago

5 0

Answer:

A is a correct answer i think

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Write as a product: ax^2+ay^2–bx^2–by^2+b–a

Vesna [10]

Answer:

$\large\boxed{ax^2+ay^2-bx^2-by^2+b-a=(a-b)(x^2+y^2-1)}$

Step-by-step explanation:

$ax^2+ay^2-bx^2-by^2+b-a\\\\=(ax^2-bx^2)+(ay^2-by^2)+(b-a)\qquad\text{use the distributive property}\\\\=x^2(a-b)+y^2(a-b)-1(a-b)\\\\=(a-b)(x^2+y^2-1)$

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3 years ago

Is the relationship between the amount of gas and pressure direct or indirect? Explain your answer

guajiro [1.7K]

Answer:

INDIRECT!

see below

Step-by-step explanation:

A law that says that if the temperature is constant then the volume of a fixed amount of a gas is inversely proportional to its pressure.If the pressure on a gas increases, the volume of the gas decreases because the gas particles are getting closer together.

8 0

3 years ago

Which is the graph of the function f(x)= negative square root x

Vsevolod [243]

First, note that $\sqrt{x}$ is always positive (except for x=0), so $-\sqrt{x}$ must be always negative.

Thus, the only plausible graphs are 1 and 3 since they are below the x-axis.

Now, $\sqrt{x}$ and $-\sqrt{x}$ are only defined for x≥0, because only for these x'es we can take the square root.

Note that the third graph has domain (-infinity, 0], so it is not the right one, while 1 is ok.

Answer: first graph

6 0

3 years ago

Factorise the following: a) x + 3x - 4 b) x - 2x - 3 c) x + 2x - 8

Komok [63]

Are they supposed to be quadratic equations? Is it x^2 +3x -4 etc?

8 0

3 years ago

I suck at math

solniwko [45]

Area of rectangle = length*breadth
= 30*22
=660 yards2
hence answer is D.
hope this helps! :)

6 0

3 years ago