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Sav [38]
3 years ago
7

which of the following sets is closed under multiplication A. {0, 1, 2, 4} B. {0, 1} C. {1, 2} D. none of the sets are closed un

der multiplication
Mathematics
2 answers:
sergejj [24]3 years ago
8 0

the correct answer would be

B. {0, 1}

please mark as brainliest :)

hope i helped


Zielflug [23.3K]3 years ago
3 0

A set is closed under an operation if performing that operation on the elements of the sets results in another element of the set.

In other words, you can "combine" the elements of the set, and the result is also belonging to the set.

So:

  • Set A is not closed under multiplication: you can choose to perform 2\cdot 4 = 8, and 8 is not in the set.
  • Set B is closed under multiplication: the only multiplications you can perform are 0\cdot 0 = 0,\ 0\cdot 1 = 0,\ 1 \cdot 0 = 0,\ 1 \cdot 1 = 1. So, every possible multiplication gives 0 or 1 as result, and they both belong to the set.
  • Set C is not closed under multiplication: the multiplications you can perform are 1\cdot 1 = 1,\ 1\cdot 2 = 2,\ 2 \cdot 1 = 2,\ 2 \cdot 2 = 4. So, the possible results are 1, 2 and 4, but 4 does not belong to the set.
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stellarik [79]

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15. Oscar wants to rent a boat. The rental shop charges and initial fee of $12 plus $8 per hour to rent the boat. Write a equati
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5 0
3 years ago
Approximate: log5 4/7
Evgesh-ka [11]
   Properties of Logs

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 Use the calculator: 

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A portfolio has a E[r] of 12% and a std deviation of 18%. T-Bills return 7%. What is the maximum level of risk aversion (A) for
solniwko [45]
<h2>The required "option D) 3.09" is correct.</h2>

Step-by-step explanation:

Given,

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