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3 years ago

10

These 2 questions I kinda need help ?

2 answers:

Irina18 [472]3 years ago

8 0

For the first one all you need to is divide both sides by two to get it alone

Aloiza [94]3 years ago

5 0

Number 6 is 12
number 7 is 36

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Pls help me solve pls show how you got the answer

Vitek1552 [10]

Step-by-step explanation:

the answer is number a 88 CM square

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3 years ago

Read 2 more answers

Erik had Y cards. He gave 13 of them to Andrew. Then Erik’s mom bought him twice as many cards as he had at the start. How many

ohaa [14]

Answer:

20

Step-by-step explanation:

$(Y-13)+2Y=47$

$Y-13+2Y=47$

$3Y-13=47$

$3Y=60$

$Y=20$

8 0

4 years ago

What is the prime factorization of the number 60?

kobusy [5.1K]

The prime Factorization of 60 is 2,2,3,5!!

5 0

3 years ago

Read 2 more answers

Geometry Question, I’m really super duper confused here

abruzzese [7]

Check the picture below.

make sure your calculator is in Degree mode.

7 0

3 years ago

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

kondaur [170]

Answer:

Due to the higher z-score, Norma 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 question:

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

Norma:

Norma got a score of 84.2; this version has a mean of 67.4 and a standard deviation of 14.

This means that $X = 84.2 \mu = 67.4, \sigma = 14$

So

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

$Z = \frac{84.2 - 67.4}{14}$

$Z = 1.2$

Pierce:

Pierce got a score of 276.8; this version has a mean of 264 and a standard deviation of 16.

This means that $X = 276.8, \mu = 264, \sigma = 16$

So

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

$Z = \frac{276.8 - 264}{16}$

$Z = 0.8$

Reyna:

Reyna got a score of 7.62; this version has a mean of 7.3 and a standard deviation of 0.8.

This means that $X = 7.62, \mu = 7.3, \sigma = 0.8$

So

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

$Z = \frac{7.62 - 7.3}{0.8}$

$Z = 0.4$

Due to the higher z-score, Norma should be offered the job

8 0

4 years ago