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2 years ago

26. Given: AE 1 AB, AD bisects ZEAC,

1 answer:

Montano1993 [528]2 years ago

6 0

For this one you have to go
2x-4+3x+14
Then combine like terms
5x+10

Divide
5/5 and 5/10
Which would be : x= 2

Then you go back to the original measure of ZCAB & ZCAE and plug it in.
So : 2(2)-4= ?
Then the other angle : 3(2)+14= ?

The answer you get for each one add them together and that will be the measure of mZDAC.
I hope this helps :)

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If y= x+3/6-x, what is the value of y when x =7i?

djverab [1.8K]

Answer:

Option (2)

Step-by-step explanation:

Given : y = $\frac{x+3}{6-x}$

If x = 7i

y = $\frac{7i+3}{6-7i}$

By simplifying denominator of the given rational expression,

y = $\frac{7i+3}{6-7i}\times \frac{6+7i}{6+7i}$

y = $\frac{(7i+3)(6+7i)}{6^2-(7i)^2}$

y = $\frac{7i(6+7i)+3(6+7i)}{36-49i^2}$

y = $\frac{42i+49i^2+18+21i}{36+49}$ [Since, i² = (-1)]

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2 years ago

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Answer:

Step-by-step explanation:

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2 years ago

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Anon25 [30]

<span>9.23076923076923%

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2 years ago

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 $X = 7.26, \mu = 7.1, \sigma = 0.4$ .

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

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

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

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