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.
Frequently asked questions
What is the correct answer to this question?
\(-1.125\)
Why is this the correct answer?
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.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Polynomials. Topic: Representing real numbers on the number line.
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