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Annette [7]
3 years ago
9

D = {x|x is a whole number}

Mathematics
1 answer:
pickupchik [31]3 years ago
4 0

The given statement is true.

Step-by-step explanation:

Given sets are:

D = {x|x is a whole number}

E = {x|x is a perfect square between 1 and 9}

F = {x|x is an even number greater than or equal to 2 and less than 9}

as the sets are given in set builder notation,, we will first write the sets in set notation.

So,

D = {0,1,2,3,4,...}

E = {4,9}

F = {2,4,6,8}

Now,

EUF = {4,9} U {2,4,6,8}

= {2,4,6,8}

Hence,

The given statement is true.

Keywords: Union,sets

Learn more about sets at:

  • brainly.com/question/9381523
  • brainly.com/question/9231234

#LearnwithBrainly

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The sum of twice a number and another number is 24. The difference of twice the first number and the other number is 12. Which s
dem82 [27]

Answer:

The system that models the situation is:

\left \{{{2x + y = 24} \atop {2x - y = 12}} \right.

The solution is:

(9, 6)

Step-by-step explanation:

We must write the equations as indicated in the problem.

The sum of twice a number and another number is 24

<em>a number:</em>  x

<em>other number:</em>  y

Then

2x + y = 24

The difference of twice the first number and the other number is 12

<em>first number: </em> x

<em>other number:</em>  y

Then:

2x - y = 12

The system that models the situation is:

\left \{{{2x + y = 24} \atop {2x - y = 12}} \right.

To solve the system we add both equations to find the value of x

2x + y = 24\\\\2x - y = 12

---------------------

4x +0 = 36\\\\x=\frac{36}{4}\\\\x=9

2(9) +y = 24\\\\y=24-18\\\\y=6

The solution is:

(9, 6)

6 0
3 years ago
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Answer:

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one week, 72 people got a speeding ticket. the next week, only 36 people got a speeding ticket. what was the percent change in s
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so 50%
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Ms. Ringer asked her class, "What are the favorite colors of the students in our school?" Which student correctly describes Ms.
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Answer:

D

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4 0
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