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polet [3.4K]
3 years ago
12

4 ∈ {4, 14, 17} is this true or false

Mathematics
1 answer:
Natalija [7]3 years ago
5 0
The symbol "<span>∈" means "belongs to".
This means that a certain element belongs to or is found in the set.

The set given contains three numbers which are 4, 14 and 17.
As you can see, 4 is found in this set, therefore, 4 belongs to this set.

Based on this, the given statement is true.</span>
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What is the difference between an observational study and an experiment
Blizzard [7]

Answer: In observational study observer has no control on the variables but in an experiment experimenter has control over the independent variable to record the change on the dependent variable.

Step-by-step explanation:

In statistics , an observational study is a study in which a researcher just observe effects on subjects in a certain manner without interfering them.

On the other hand an experiment is a process which is done by experimenter to  demonstrate a known fact or create a discovery by applying some methods to the variables  .

The basic difference between an observational study and an experiment is<em> in observational study observer has no control on the variables but in an experiment experimenter has control over the independent variable to record the change on the dependent variable.</em>

4 0
3 years ago
9x ≥117 which numbers below belong to the solution set of the inequality
lakkis [162]
9 x ≥ 117

Divide both sides by 9 :

9 x / 9 ≥ 117 / 9

x = 117 / 9

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hope this helps!
7 0
3 years ago
Write a two-column <br> Give: <br><br> proof: x=45
AleksAgata [21]
Two lines that cross each other have each pair of angles the same.

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8 0
3 years ago
What percent is equivalent to 1/20​
olganol [36]

Answer:

1/20 is 5%

Step-by-step explanation:

1/20 = 5%

20/20 = 100%

100 ÷ 20 = 5%

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5 0
3 years ago
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The width of a rectangular rug is 6 feet if the perimeter is 24 feet what is the area of the rug?
babymother [125]

Answer:

36 feet squared

Step-by-step explanation:

Finding the perimeter of an object is adding all of the sides together. If the width of the rug is 6 feet then we know that there are two sides that length. Add those together.

6 feet + 6 feet = 12 feet

You would subtract the number you get from the perimeter.

24 feet - 12 feet = 12 feet

And then divide the number by the number of sides left, 2, to get each of their lengths.

12 feet / 2 feet = 6 feet

To find the area of a rectangle you multiply length times width, which in this case both are 6 feets.

6 feet x 6 feet = 36 feet squared

6 0
2 years ago
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