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If point A has coordinate \(-4.125\) and point B has coordinate \(1.875\) on the number line, what is the midpoint of segment AB?

Answer and explanation

Correct answer: \(-1.125\)

The coordinate of the midpoint is the average of the two coordinates: \(\frac{-4.125+1.875}{2}=\frac{-2.25}{2}=-1.125\). Therefore, option A is correct. Option C results from ignoring the negative sign of A. In an exam, add the coordinates algebraically and divide the result by 2.

Related tags

Number LineMidpointDecimal NumbersRepresenting Real Numbers On The Number LinePolynomialsMathematicsClass 10 Mcq

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