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sweet [91]
3 years ago
8

I’m confused on questions c-f

Mathematics
2 answers:
attashe74 [19]3 years ago
8 0
C= 4x^2 -5x + 3
D= -4x^2 + 11x +1
E= 4x^2 -11x -1
F would be like the first one, just plug in 4 where the Xs are so I think it’s 47
Nadya [2.5K]3 years ago
4 0
I gotchu !! just give me a moment to write it 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
BARSIC [14]

Answer:

Due to the higher Z-score, Demetria should be offered the job.

Step-by-step explanation:

Z-score:

In a set with mean \mu and standard deviation \sigma, the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

In this question:

Whichever applicant had grade with the highest z-score should be offered the job.

Demetria got a score of 85.1; this version has a mean of 61.1 and a standard deviation of 12.

For Demetria, we have X = 85.1, \mu = 61.1, \sigma = 12. So

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

Z = \frac{85.1 - 61.1}{12}

Z = 2

Vincent got a score of 299.2; this version has a mean of 264 and a standard deviation of 22.

For Vincent, we have X = 299.2, \mu = 264, \sigma = 22.

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

Z = \frac{299.2 - 264}{22}

Z = 1.6

Tobias got a score of 7.26; this version has a mean of 7.1 and a standard deviation of 0.4.

For Tobias, we have X = 7.26, \mu = 7.1, \sigma = 0.4.

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

Z = \frac{7.26 - 7.1}{0.4}

Z = 0.4

Due to the higher Z-score, Demetria should be offered the job.

3 0
3 years ago
Which of the following statements is true?
deff fn [24]

Answer:

3/4> 3/5 is true and correct

5 0
2 years ago
If x2 − 8xy + 12y2 = 8 and x − 6y = 3, then x − 2y =<br> A) 18<br> B) 24<br> C) 36 <br> D) 8 3
IgorLugansk [536]
It is the last answer letter D 8/3 

3 0
3 years ago
Anyone knows what be?
sp2606 [1]

im not sure but i think it is 15

4 0
3 years ago
?Write the phrase as a rate in simplest form.<br> ?260 inches in 15 seconds<br><br> ?
melomori [17]

Answer: 52:3


Step-by-step explanation:

260 divided by 5 = 52

15 divided by 5 = 3

260:15 = 52:3


6 0
3 years ago
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