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What is the solution of the inequality \(0.2x+1.5\leq 3.1\)?

Answer and explanation

Correct answer: \(x\leq 8\)

Subtracting \(1.5\) from both sides gives \(0.2x\leq 1.6\). Dividing by the positive number \(0.2\) yields \(x\leq 8\). The inequality sign does not reverse because the divisor is positive, so \(x\geq 8\) is incorrect. Exam tip: reverse the inequality sign only when multiplying or dividing by a negative number.

Related tags

Decimal InequalityLinear InequalitiesSolving InequalitiesInequality SignsAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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