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Which expression is equivalent to | a | ≤ 4 ?
1. a ≥ –4 and a ≤ 4
2. a ≤ –4 or a ≥ 4
3. a ≤ –4 and a ≥ 4
4. a ≥ –4 or a ≤ 4

User Styxxy
by
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1 Answer

2 votes

Answer:

1. a ≥ –4 and a ≤ 4

Explanation:

Rule : | a | ≤ 4 ⇔ -4 ≤ a ≤ 4

:)

User Jeremy Pearson
by
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