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LekaFEV [45]
3 years ago
10

Apply the distributive property to produce an equivalent expression. 12 + 20​

Mathematics
2 answers:
notsponge [240]3 years ago
8 0

Answer:

10 + 20 + 2

Easy, make it easy to do mentally than add the remaining

Irina18 [472]3 years ago
3 0

Answer:

12 + 20 = 4*3 + 4*5 = 4*(3 + 5)  

Step-by-step explanation:

Distributive property states

a*(b + c) = a*b + a*c  

Look if you know that 12 = 4*3 and 20 = 4*5

You can write it as

12 + 20 = 4*3 + 4*5 = 4*(3 + 5)  

That would be it in distributive property

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What is the simplified form of the following expression? 10abc^2 sqrt 49a^2b^2c^2
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10abc^2\sqrt{49a^2b^2c^2}=70a^2b^2c^3 

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10abc^2\sqrt{49a^2b^2c^2} 

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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
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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:

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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.

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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

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

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

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