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Which inequality is true for all real numbers? check all that apply.

1.a – b < a + b
2.ac ≥ bc
3.If a ≥ b, then a + c ≥ b + c
4.If c > d, then a– c < a – d
5.If a < b, then a < b + c

User Marry
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2 Answers

6 votes

Answer:

Answers 3 and 4

Explanation:

Got it right

User Arjita Mitra
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4 votes

Answer:

3. If a ≥ b, then a + c ≥ b + c

4. If c > d, then a– c < a – d

Explanation:

The inequalities 3 and 4 are the right ones, because they are actually properties of inequalities.

The other choices aren't correct. For example, the first choice: a – b < a + b, it's not true, because you must apply the same change at each side of the inequality, otherwise you'll ruin the expression.

Choices 2 and 5 are also false.

Therefore, the right answers are 3 and 4.

User ZHAO Xudong
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9.6k points

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