Which of the following equations is not equivalent to the others?

Mathematics

1 answer:

timofeeve [1]3 years ago

8 0

Answer:

<h2>y = -4 + 3x</h2><h2>Step-by-step explanation:</h2>

Let's write the terms:

y = -4 + 3x → (-4) and (3x)

y = -3x + (-4) → (-4) and (-3x)

y = -3x - 4 → (-4) and (-3x)

y = -4 - 3x → (-4) and (-3x)

Other method

1. y = -4 + 3x

2. y = -3x + (-4) = -3x - 4 → 3. <em>use (-)(+) = (-)</em>

3. y = -3x - 4

4. y = -4 - 3x = -4 + (-3x) = (-3x) + (-4) = -3x - 4 → 3. <em>use commutative property</em>

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a, 7C5 = 21 ways

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3 years ago

I need help finding the missing side length with the answer in radicals in the simplest form.

AlekseyPX

Answer:

Step-by-step explanation:

There’s nothing hard with this

You need to know special right triangles

This is a 30,60, 90 triangle

We automatically know becuase theres. Right angle (90) and a 60 degree angle

now the formula is the smallest side is (n) {I’m using N becuase theres already an X) or in this case, 6

The hypotenuse, the one directly above the 2nd biggest side, or the diagnoal side is 2n or (12). Now we know what X is in this situation which is 12. So that narrows it to 2 answers

Now the side on the bottom of the hypotenuse, the second biggest side is used in the formula N $\sqrt{3}$ . So we know what N is in the beginning, 6 so we just plug that in and well get C. Attached is a photo on q 30, 60, 90 special right triangle