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Which value of \(x\) satisfies the inequality \(5x+2\ge 27\)?

Answer and explanation

Correct answer: \(x=5\)

Starting with \(5x+2\ge 27\), subtracting 2 from both sides gives \(5x\ge 25\). Dividing by 5 gives \(x\ge 5\); the inequality sign remains unchanged because 5 is positive. Therefore, \(x=5\) is correct as it is the boundary value. The closest distractor, \(x=4\), gives \(22\ge 27\), which is false. Exam tip: the inequality sign reverses only when dividing or multiplying by a negative number.

Related tags

Linear InequalitiesOne Variable InequalitiesSolution CheckingBoundary ValueAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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