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3 years ago

Which of the statements about the x-axis are true?

1 answer:

3 0

The x axis is a horizontal line that intersects the y axis at the origin
in an ordered pair, x is the first number

I is true because they do intersect at the origin
II is false because x axis is horizontal
III is false because x is the first number
IV. is true because it is horizontal and it does pass through the origin

I and IV are true

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Answer: the answer is C

Step-by-step explanation:

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AlekseyPX

z = 3m - 2n

Step-by-step explanation:

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1) False

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2) B and D

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4) B

Angles 1 and 2 add up to 180. Angles 3 and 4 add up to 180. Both of these pairs of angles are supplementary.

5) A

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2 years ago

The board of examiners that administers the real estate broker's examination in a certain state found that the mean score on the

Goshia [24]

Answer:

The passing score is 645.2

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

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

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 553, \sigma = 72$