3 years ago

What is the solution for 3x-(2+4x)

2 answers:

6 0

I’m pretty sure you add the opposite. 3x and 4x have the same variable so you add those together and get 7x. And you get 7x - 2 because 2 doesn’t have like terms (variables).

Ivenika [448]3 years ago

3 0

The answer is - 7x-2

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(5x + 4) + (- 8x - 2)

IgorLugansk [536]

Answer:

-3x+2

Step-by-step explanation:

5x+4−8x−2

=5x+4+−8x+−2

Combine Like Terms:

=5x+4+−8x+−2

=(5x+−8x)+(4+−2)

=−3x+2

Answer:

=−3x+2

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Darya [45]

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A set of test scores are normally distributed. The mean is 100 and the standard deviation is 20. These scores are converted to s

Whitepunk [10]

Answer:

The z-scores of both the mean and the median are zero.

Step-by-step explanation:

In a normal distribution, the mean and median values will be the same, in this case, 100. Therefore, both the mean and median will have the same score.

The z-score is given by:

$z=\frac{X-\mu}{\sigma}$