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zhannawk [14.2K]
3 years ago
8

Help me please!!!! i need help fr

Mathematics
2 answers:
Irina18 [472]3 years ago
5 0

Answer:

girly just look it up

Step-by-step explanation:

lol

Mariulka [41]3 years ago
5 0
It is 12 I’m pretty sure
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Draw a line representing “rise” and line representing the “run of the line state the slope of the line .state the slope of the l
Scorpion4ik [409]

Answer:

  slope 4/5

Step-by-step explanation:

The attachment shows the rise in green (4 grid squares), and the run in red (5 grid squares). The slope is the ratio rise/run.

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The slope is rise/run = 4/5.

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2 years ago
Whats 2 plus 2? Whats 10 plus 10? And whats 8 plus 8?
Ivenika [448]

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3 0
3 years ago
Read 2 more answers
Click or touch the graph to plot the points.
lina2011 [118]

Answer:

the answer is C

Step-by-step explanation:

the y intercept is on the right, so (x, y)

and the third option has (4,8) so 8 is on the y

4 0
3 years ago
Find the constant of proportionality from the table below
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6 0
3 years ago
Scores on a college entrance exam are normally distributed with a mean of 550 and a standard deviation of 100. Find the value th
Alinara [238K]

Answer:

The value that represents the 90th percentile of scores is 678.

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 = 550, \sigma = 100

Find the value that represents the 90th percentile of scores.

This is the value of X when Z has a pvalue of 0.9. So X when Z = 1.28.

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

1.28 = \frac{X - 550}{100}

X - 550 = 100*1.28

X = 678

The value that represents the 90th percentile of scores is 678.

4 0
3 years ago
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