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3 years ago

Please help, I am really bad at algebra

Mathematics

2 answers:

Marianna [84]3 years ago

6 0

The answer is (0,3)

Hope this helps you

Anestetic [448]3 years ago

6 0

Answer:

Step-by-step explanation:

f(x) = 3(1/4)^x

a. (-2, 48)

f(-2) = 3(1/4)^(-2) = 3(4)^2 = 3 * 16 = 48

(-2, 48) is on the graph.

b. (0, 3)

f(0) = 3(1/4)^(0) = 3(1) = 3

(0, 3) is on the graph.

c. (2, 3/16)

f(2) = 3(1/4)^(2) = 3(1/16) = 3/16

(2, 3/16) is on the graph.

d. (12, 0)

f(12) = 3(1/4)^(12) = 3(0.000000596)

f(12) does not equal zero.

(12, 0) is not correct

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Read 2 more answers

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