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xxTIMURxx [149]
2 years ago
9

Which expression is equivalent to(6x + 2) + (3x + 7)​

Mathematics
2 answers:
photoshop1234 [79]2 years ago
8 0

There are an infinite number of expressions that are equivalent to it.  A few of them are:

--  3(2x + x + 3)

--  (9x + 9)

--  3(3x + 3)

--  9(x + 1)

--  (18x + 18) / 2

--  3√(x² + 6x + 9)

Without seeing the list of choices that you neglected to post along with the rest of the question, it's not possible for us to guide you to the correct choice.

gavmur [86]2 years ago
3 0

Answer:

9x+9

Step-by-step explanation

Combine like terms (6x and 3x, 2 and 7)

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Nuetrik [128]

Answer:

x = 1, y = -1

Step-by-step explanation:

If we have the two equations:

4x+3y=1 and -3x - 6y = 3, we can look at which variable will be easiest to eliminate.

y looks like it might be easy to get rid of, we just have to multiply 4x+3y=1  by 2 and y is gone (as -6y + 6y = 0).

So let's multiply the equation 4x+3y=1  by 2.

2(4x + 3y = 1)\\8x + 6y = 2

Now we can add these equations

8x + 6y = 2\\-3x-6y=3\\

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5x = 5

Dividing both sides by 5, we get x = 1.

Now we can substitute x into an equation to find y.

4(1) + 3y = 1\\4 + 3y = 1\\3y = -3\\y = -1

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3 years ago
4. Describe how you can tell by looking at the graph of a function
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Answer: The variable in the vertical axis (or y-axis) is the output

The variable in the horizontal axis (or x-axis) is the input.

Step-by-step explanation:

Usually, a graph of a function y = f(x) is represented in an X-Y coordinate axis.

An X-Y coordinate axis is conformed by two perpendicular lines, one vertical (y-axis) and one horizontal (x-axis)

The vertical axis (or the y-axis) is the output, and the horizontal axis (or the x-axis) is the input.

This method will work almost always, as is standardized that the x-axis corresponds to the input, and the y-axis corresponds to the output.

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Explanation:

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