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iVinArrow [24]
3 years ago
8

HELP 20 POINTS!! Where is point A on the number line?

Mathematics
2 answers:
Bingel [31]3 years ago
6 0

Answer:

3 1/2

Step-by-step explanation:

yanalaym [24]3 years ago
5 0

Answer:

3.5 or in your answers 3 1/2

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What is angle F to the nearest degree?
nekit [7.7K]

Answer:

So we already knew all three sides, there are more than one way to do it, for example:

sin∠F = HG/HF = 12/13

cos∠F = GF/HF = 5/13

tan∠F = HG/GF = 12/5

ctg∠F = GF/HG = 5/12

All of them will give you the result which is approximately 67°.

8 0
3 years ago
At a Psychology final exam, the scores are normally distributed with a mean 73 points and a standard deviation of 10.6 points. T
USPshnik [31]

Answer:

The score that separates the lower 5% of the class from the rest of the class is 55.6.

Step-by-step explanation:

Problems of normally distributed samples can be 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 question:

\mu = 73, \sigma = 10.6

Find the score that separates the lower 5% of the class from the rest of the class.

This score is the 5th percentile, which is X when Z has a pvalue of 0.05. So it is X when Z = -1.645.

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

-1.645 = \frac{X - 73}{10.6}

X - 73 = -1.645*10.6

X = 55.6

The score that separates the lower 5% of the class from the rest of the class is 55.6.

3 0
3 years ago
Looking for someone who can take a look at this question for me:
In-s [12.5K]
There are
7 red balls
8 red balls
1 yellow ball
Hope this helps have a good day! :)
4 0
2 years ago
There are 17 students in the art club. Each student purchases 6 paintbrushes at $3 per brush. How much did the art club members
zaharov [31]

Answer:

$306

17 (6×3)

17 (18)

306

4 0
3 years ago
Read 2 more answers
Please help me out. i needa turn it in by the ena the day. Ill mark you brainliest
Sphinxa [80]

Answer:

B

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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