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What region is obtained by \( ( -\infty,-2) \cap [-5,4] \) on a number line?

Answer and explanation

Correct answer: \( [-5,-2) \)

Intersect means take the common part of both intervals. \( ( -\infty,-2) \) contains all numbers less than \(-2\), but not \(-2\). \( [-5,4] \) contains all numbers between \(-5\) and \(4\), including both ends. The overlap therefore goes from \(-5\) (included) up to \(-2\) (excluded), giving \( [-5,-2) \).

Related tags

Linear InequalitiesInterval IntersectionNumber LineClosed Open Endpoints

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