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What is the location of the point on the number line that is [tex]$\frac{1}{2}$[/tex] of the way from [tex]$A=31$[/tex] to [tex]$B=6$[/tex]?

A. 16
B. 11
C. 21
D. 19


Sagot :

To determine the location of the point that is [tex]\(\frac{3}{4}\)[/tex] of the way from [tex]\(A = 31\)[/tex] to [tex]\(B = 6\)[/tex] on the number line, we can follow these steps:

1. Identify the coordinates of the points A and B:
- [tex]\(A = 31\)[/tex]
- [tex]\(B = 6\)[/tex]

2. Calculate the distance between A and B on the number line:
- The distance [tex]\(d\)[/tex] between [tex]\(A\)[/tex] and [tex]\(B\)[/tex] is [tex]\(B - A\)[/tex].
- [tex]\(d = 6 - 31 = -25\)[/tex]

3. Determine the fraction of the distance to travel from A towards B:
- We need to find the point that is [tex]\(\frac{3}{4}\)[/tex] of the way from [tex]\(A\)[/tex] to [tex]\(B\)[/tex].
- The fraction is [tex]\(\frac{3}{4}\)[/tex].

4. Calculate the fraction of the distance:
- Multiply the total distance by the fraction: [tex]\(\frac{3}{4} \times (-25) = -18.75\)[/tex].

5. Calculate the final coordinate:
- Starting from [tex]\(A\)[/tex], we move this distance towards [tex]\(B\)[/tex].
- Final coordinate = [tex]\(A + (-18.75)\)[/tex]
- [tex]\(31 + (-18.75) = 31 - 18.75 = 12.25\)[/tex]

Thus, the location of the point that is [tex]\(\frac{3}{4}\)[/tex] of the way from [tex]\(A = 31\)[/tex] to [tex]\(B = 6\)[/tex] on the number line is [tex]\(12.25\)[/tex].

Since none of the given options match [tex]\(12.25\)[/tex] exactly, it seems there might have been a misunderstanding in the question or the provided choices. Based on our calculation, the correct numerical answer is 12.25. If any discrepancy exists, please double-check the choices given or the exact formulation of the question.