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Masteriza [31]
3 years ago
13

Max and Emma are discussing their math homework and disagree on the answer for one question. Max says that integers are closed u

nder division because 8 divided by 2 is 4. Emma disagrees and says integers are not closed under division because 7 divided by 2 is 3.5, which is not an integer. Who is correct?

Mathematics
1 answer:
hram777 [196]3 years ago
4 0

A set has closure under an operation if performance of that operation on members of the set always produces a member of the same set; in this case we also say that the set is closed under the operation.

A closure property is a certain rule that holds <u>if it is true for all elements of a set under the given operation</u> and a closure property does not hold <u>if there is at least one pair of elements that do not follow the closure property under the given operation.</u>

Therefore, Emma is correct, because you can find a counterexample (7:2=3.5) that gives you a non-integer answer.

Answer: correct option is B

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4:50

Step-by-step explanation:

3 0
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MATH HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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Step-by-step explanation:

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At a zoo, 20% of the animals are amphibians. If 65 animals are amphibians, how many
Gnom [1K]

Answer:

d. 325

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4 0
3 years ago
A cylinder has a radius of 12 m and a height of 8 m. What is the approximate surface area of the cylinder? Use 3.14 for π. Use y
____ [38]

Answer:

 1507m²

Step-by-step explanation:

Given parameters:

Radius of cylinder = 12m

Height of cylinder = 8m

π = 3.14

Unknown:

Surface Area of cylinder = ?

Solution:

The surface area of any body is the sum of all the area that covers a body.

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Where SA = Surface Area

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              h = height of cylinder

Now input the parameters in the given equation and solve;

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4 0
3 years ago
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What is the circumference of a circle if the diameter is 7ft
dybincka [34]
You find the circumference is 2PIr
so radius is half of the diameter so 7/2=3.5
pi= 3.14
2*3.14=6.28
6.28*3.5= 21.98
7 0
3 years ago
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