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Dovator [93]
3 years ago
14

Use complete sentences to describe why for any set B, that the empty set would be a subset of it.

Mathematics
2 answers:
ella [17]3 years ago
6 0
Because empty set has no element which automatically make it a subset of every set. 

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.
olasank [31]3 years ago
4 0

Answer with Step-by-step explanation:

Suppose a set B.

We have to describe why for any set B, empty set would be a subset of it.

Empty set : It is that set which contain no element.

It is represented as \phi or {}.

When an empty set contain no element then empty set would be be a subset of any set .

If a set B={1,2}

Then , empty set \phi will be  a subset of B.

Hence, empty set would be a subset of any set B.

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Jacob took a total of 12 quizzes over the course of 3 weeks.
harkovskaia [24]
I think its 7.3 not very sure though
Its because if you divide 22(quizzes)by 3(weeks)
7 0
3 years ago
Find the value of |-8| + 4(-5 + 9) ÷ 2.<br><br> 16<br> 12<br> 24<br> 0
jeka57 [31]

Answer:

16

Step-by-step explanation:

using the abs value rewrite equation to:  8 + 4(-5 + 9) ÷ 2

8+4(4)/2

8+16/2

8+8=16

hope this helps

6 0
3 years ago
Read 2 more answers
 Joe's water tower leaks 0.6 liters of water per day. How much water is lost over 12 dayspp​
aksik [14]

Answer:

7.2 liters

Step-by-step explanation:

Multiply 12 by 0.6

6 0
3 years ago
8x+1=-x-1 please help
ella [17]

Answer:

x = -2/9

Step-by-step explanation:

8x+1=-x-1

8x = -x -2

9x = -2

x = -2/9

6 0
3 years ago
The hourly wages earned by 20 employees are shown in the first box and whisker plot below. The person earning $15 per hour quits
serg [7]

I added the plots in the attachments.

<u><em>Answer:</em></u>

The mean will decrease

The median will remain the same

<u><em>Explanation:</em></u>

<u>1- checking the mean:</u>

<u>Mean of the salaries is calculated as follows:</u>

Mean = \frac{sum-of-salaries}{number-of-employees}

<u>Now, we can note that two parameters affect the mean, let's consider each:</u>

<u>a. Number of employees:</u>

We are given that one employee is replaced with another. This means that the number of employees did not change

<u>b. Sum of salaries:</u>

We are given that a person earning $15 left and the new person earns $7. This means that:

New sum of salaries = old sum of salaries - 15 + 7 = old sum of salaries - 8

This means that the sum of salaries decreased by 8

<u>Now, for the mean:</u>

We can conclude that since the numerator decreased while the denominator stayed the same, the mean will decrease

<u>2- checking the median:</u>

In the whisker plots, the median is represented by the vertical line inside the plot.

<u>In the first plot,</u> we can note that the vertical line is nearly half the distance between 9 and 10. This means that, for the first plot, the median is approximately 9.5

<u>In the second plot,</u> the place of the median is unchanged. It is still approximately midway between 9 and 10 which means that the median in the second plot is approximately 9.5

Therefore, the median of the data remains unchanged.

Hope this helps :)

5 0
3 years ago
Read 2 more answers
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