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Solve the compound inequality (-6\le \frac{4-x}{2}<3).

Answer and explanation

Correct answer: \(-2<x\le 16\)

Multiplying all three parts by 2 gives \(-12\le 4-x<6\). From the left part, \(-12\le4-x\), we get \(x\le16\); from the right part, \(4-x<6\), we get \(x>-2\). Their common solution is \(-2<x\le16\). Option C incorrectly includes \(-2\): substituting \(x=-2\) makes the right-hand condition \(3<3\), which is false. Exam tip: split a compound inequality into two inequalities and take their intersection.

Related tags

Linear InequalitiesCompound InequalityOne VariableAlgebraic SolutionClass 11 MathematicsAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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