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If (x\in\mathbb{R}), what is the combined solution of (5x-2<3x+10) and (x+4\ge2)?

Answer and explanation

Correct answer: -2\le x<6

The governing concept for a combined ‘and’ statement is intersection: a number must satisfy both inequalities simultaneously. Solve the first inequality: 5x-2<3x+10 gives 2x<12, hence x<6. Solve the second: x+4\ge2 gives x\ge-2. The common portion of x<6 and x\ge-2 is the interval [-2,6), written -2\le x<6. The left endpoint is included because the second inequality permits equality at -2. The right endpoint is excluded because the first inequality is strict and does not permit x=6. Therefore option A is correct. Option C omits the lower restriction, option D omits the upper restriction, and option B incorrectly reverses which endpoints are included.

Related tags

Linear InequalitiesClass 11IntersectionCombined SolutionAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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