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On a number line, point A represents \(-\sqrt{7}\) and point B represents \(-2.6\). A student says that since \(\sqrt{7}>2.6\), A must lie to the right of B. Which correction is correct?

Answer and explanation

Correct answer: Point A lies to the left of B.

Since \(\sqrt{7}\approx2.646\), we get \(-\sqrt{7}\approx-2.646\). As \(-2.646<-2.6\), A is to the left of B. Exam tip: among negative numbers, the value with greater magnitude lies further left.

Related tags

Number LineIrrational NumbersNegative NumbersSquare RootsComparison Of Real NumbersNumber SystemsMathematicsClass 9 Mcq

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