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For which (x) is (-1<\frac{x-4}{2}\le 6)?

Answer and explanation

Correct answer: \(2<x\le16\)

Multiplying every part of the inequality by the positive number 2 does not reverse the inequality signs: \(-2<x-4\le12\). Adding 4 to every part gives \(2<x\le16\). Therefore, option A is correct. In option B, the inequality signs at both endpoints are incorrect. Exam tip: reverse inequality signs only when multiplying or dividing by a negative number.

Related tags

Linear InequalitiesClass 11One VariableCompound InequalityAlgebraic SolutionAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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