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2 years ago

Erin writes the set of ordered pairs below. The set represents a function.

Mathematics

2 answers:

sukhopar [10]2 years ago

5 0

Answer:

A,B,

Step-by-step explanation:

A function cannot have the same x values but can have the same y values.

Is D supposed to be (-1,7) by the way? If it is the answer will be A,B,D.

If this answer has helped you please mark as brainliest

balu736 [363]2 years ago

4 0

Answer:

A,B

Step-by-step explanation:

Just trust

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Can someone help with numbers 15 and 16

vichka [17]

15.

I had x before the movie.

x - 13.50 = 26.50

Add 13.50 to both sides of the equation:

x = 40

I had $40 before the movie.

16.

The original balance was x.

x - 161.15 = 423.28

Add 161.15 to both sides:

x = 584.43

The previous balance was $584.43

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3 years ago

To the nearest square inch, what is the area of the shaded sector in the circle shown below

egoroff_w [7]

We would need to know the measurements of the circle to answer this

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2 years ago

Read 2 more answers

Enter the common ratio for this geometric sequence:

kotegsom [21]

Answer:

/2 each time

Step-by-step explanation:

8,4,2

8/2=4

4/2=2

etc

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2 years ago

A telemarketing firm is monitoring the performance of its employees based on the number of sales per hour. One employee had the

Len [333]

Answer:

First quartile = 3.5

Third quartile = 6.5

Step-by-step explanation:

Sales for last 20 hours :

3, 4, 5, 5, 6, 7

Using the data given :

The first quartile, Q1 ;

Q1 = 1/4(n+1)th term

n = 6

Q1 = 1/4(6 + 1)th term

Q1 = 7/4 = 1.75 th term

(3 + 4) / 2 = 7/2 = 3.5

The third quartile, Q3:

Q3 = 3/4(n+1)th term

n = 6

Q3 = 3/4(6 + 1)th term

Q3 = 21/4 = 5.25th term

(5th + 6th) term / 2

(6 + 7) / 2 = 13/2 = 6.5

6 0

2 years ago

The average performance rating of the employees at Company A is 6.5 on a scale from 1 to 10 (10 being highest). The standard dev

djyliett [7]

Answer:

The best choice would be hiring a random employee from company A

Step-by-step explanation:

<em>Supposing that the performance rating of employees follow approximately a normal distribution on both companies</em>, we are interested in finding what percentage of employees of each company have a performance rating greater than 5.5 (which is the mean of the scale), when we measure them in terms of z-scores.

In order to do that we standardize the scores of both companies with respect to the mean 5.5 of ratings

The z-value corresponding to company A is

$z=\frac{\bar x-\mu}{s}$

where

$\bar x$ = mean of company A

$\mu$ = 5.5 (average of rating between 1 and 10)

s = standard deviation of company A

$z=\frac{\bar x-\mu}{s}=\frac{6.5-5.5}{2.1}=0.7142$

We do the same for company C

$z=\frac{\bar x-\mu}{s}=\frac{7.4-5.5}{6.8}=0.2794$

This means that 27.49% of employees of company C have a performance rating > 5.5, whereas 71.42% of employees of company B have a performance rating > 5.5.

So, the best choice would be hiring a random employee from company A

4 0

3 years ago