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Margaret [11]
3 years ago
10

I will mark brainliest XD

Mathematics
1 answer:
Usimov [2.4K]3 years ago
4 0

Answer:

First one A and D

Second A and C

Third A and D

Fourth 20 / 4 = X

X = 5

Step-by-step explanation:

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<h2>Answer:</h2>

For a real number a, a + 0 = a.  TRUE

For a real number a, a + (-a) = 1.  FALSE

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For real numbers a, b, and c, a + (b ∙ c) = (a + b)(a + c).  FALSE

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<h2>Explanation:</h2>

  • <u>For a real number a, a + 0 = a.  </u><u>TRUE</u>

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This is false, because:

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For any number a there exists a number -a such that a+(-a)=0

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This is a property of absolute value. The absolute value means remove the negative for the number, so it is true that:

\mid a-b \mid= \mid b-a \mid

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A rational number is a number made by two integers and written in the form:

\frac{u}{v} \\ \\ v \neq 0

Given that a \ and \ b are rational, then the result of dividing them is also a rational number.

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