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What is the location of the point on the number line that is [tex]\frac{2}{7}[/tex] of the way from [tex]A=18[/tex] to [tex]B=4[/tex]?

A. 13
B. 16
C. 15
D. 14


Sagot :

Sure! Let's work through the problem step by step to find the location of the point on the number line that is [tex]\(\frac{2}{7}\)[/tex] of the way from [tex]\(A = 18\)[/tex] to [tex]\(B = 4\)[/tex].

1. Identify the positions of points A and B:
- [tex]\(A = 18\)[/tex]
- [tex]\(B = 4\)[/tex]

2. Calculate the distance from point A to point B:
[tex]\[ \text{Distance} = B - A = 4 - 18 = -14 \][/tex]
The distance is [tex]\(-14\)[/tex].

3. Determine the fraction of the distance:
We want to find the position that is [tex]\(\frac{2}{7}\)[/tex] of the way from [tex]\(A\)[/tex] to [tex]\(B\)[/tex].

4. Calculate the location of the point that is [tex]\(\frac{2}{7}\)[/tex] of the way from [tex]\(A\)[/tex] to [tex]\(B\)[/tex]:
[tex]\[ \text{Point Location} = A + \left( \frac{2}{7} \right) \times \text{Distance} = 18 + \left( \frac{2}{7} \right) \times (-14) \][/tex]

5. Simplify the expression:
[tex]\[ \text{Point Location} = 18 + \left( \frac{2}{7} \times -14 \right) \][/tex]
[tex]\[ \text{Point Location} = 18 + \left( \frac{2 \times (-14)}{7} \right) \][/tex]
[tex]\[ \text{Point Location} = 18 + \left( \frac{-28}{7} \right) \][/tex]
[tex]\[ \text{Point Location} = 18 + (-4) \][/tex]
[tex]\[ \text{Point Location} = 18 - 4 = 14 \][/tex]

So, the location of the point that is [tex]\(\frac{2}{7}\)[/tex] of the way from [tex]\(A = 18\)[/tex] to [tex]\(B = 4\)[/tex] is [tex]\(14\)[/tex].

Thus, the correct answer is:
[tex]\[ \boxed{14} \][/tex]