Which answers choice shows that the set of irrational numbers is not closed under addition?
2 answers:
Answer:
Step-by-step explanation:
First of all, we have to define what refers "closed under addition".
The closure property under operations is when we operate to number and we get a result that's inside the same number field. For example, if we sum one integer with another one, we would have an integer as a result, that means integers are closed under addition.
So, if you observe the possible answers, you would see that is not showing closure under addition, because it doesn't result in a irrational as the third choice do
Therefore, the answer is the first option.
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Answer:
¹²/₇
Step-by-step explanation:
Model ⁴/₇ × 3
Assume that you have three pies, each dived into seven slices.
There are only four slices remaining in each pie, that is, there is ⁴/₇ pie in each pie plate
The picture represents ⁴/₇ × 3.
Model the product
Now, transfer slices to get as many filled pie plates as possible.
Count the total slices.
You have 12 slices, and each slice represents ⅐ of a pie.
You have ¹²/₇ pie.
∴ ⁴/₇ × 3 = ¹²/₇
