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Slav-nsk [51]
3 years ago
5

Plz help i can’t figure it out

Mathematics
2 answers:
Ivan3 years ago
5 0

Answer:

-(x-10)=7

-x+10=7

-x=7-10

-x=-3

x=3

Rama09 [41]3 years ago
5 0
Here you go bro hope this helps you out.

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Three potential employees took an aptitude test. Each person took a different version of the test. The scores are reported below
emmasim [6.3K]

Answer:

Tera had the higher z-score, so she should be offered the job.

Step-by-step explanation:

Z- score:

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:

Whoever has the higher z-score should get the job.

Brittany:

Scored 88.3, mean 63.1, standard deviation 14. So

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

Z = \frac{88.3 - 63.1}{14}

Z = 1.8

Alissa:

Scored 236.5, mean 219, standard deviation 25. So

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

Z = \frac{236.5 - 219}{25}

Z = 0.7

Tera:

Scored 7.75, mean 6.66, standard deviation 0.5. So

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

Z = \frac{7.75 - 6.66}{0.5}

Z = 2.18

Tera had the higher z-score, so she should be offered the job.

3 0
3 years ago
A man revived 7 per cent interest on a loan of 200 for a year how much interests did he revive
Zielflug [23.3K]

Answer:

$455.5

Step-by-step explanation:

200+(0.7x365)

7 0
3 years ago
The dot plot shows the highest daily temperature recorded in a city each year for the past 15 years. What is the interquartile r
Ber [7]

The dot plot shows the highest daily temperature recorded in a city each year for the past 15 years. What is the interquartile range of the data?

B.  4

5 0
3 years ago
Recommendations
aivan3 [116]

Answer:

27 cubic meters

Step-by-step explanation:

The surface area of this cube is 54 square meters.

Given a cube of side length s,

  • Surface Area =6s^2

Therefore:

6s^2=54\\s^2=54/6\\s^2=9\\s=\sqrt{9}\\ s=3$ meters

Volume of a Cube of side length s =s^3

Volume of the cube =3^3

=27 cubic meters

The volume of the cube is 27 cubic meters.

4 0
3 years ago
The arc corresponding to a central angle of 38 in a circle of radius 20 feet measures _____ feet
Anuta_ua [19.1K]
Arc length formula is s = r*theta, where s is the arc length and theta is the angle in radians (not degrees).

Here,  we must convert 38 degrees to radians:

38 deg       pi rad
----------- * ------------- = 0.211 pi radians = 0.663 rad
      1          180 deg

Then the arc length is (20 ft)(0.663 rad) = 13.26 ft
4 0
2 years ago
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