Line segment AB measures 18 units.

A number line with no numbers. A closed circle above the line is labeled A. A closed circle nine notches down the line is labeled B. The space between point A and the next notch is labeled d.

What is d, the distance between tick marks on the number line?

1 unit

2 units

3 units

9 units

We are given that the total distance between points \( A \) and \( B \) is 18 units, and there are 9 notches between them on the number line. Each notch represents the distance \( d \).

Since there are 9 notches, the distance between each notch is:

\[
d = \frac{\text{Total distance}}{\text{Number of notches}} = \frac{18}{9} = 2 \text{ units}.
\]

Therefore, the distance \( d \) between each tick mark is **2 units**.

Would you like more details or have any questions? 

Here are 5 related questions to expand on this:

1. What is the total distance if there are 12 notches and each represents 3 units?
2. How would you find the number of notches if the total distance and \( d \) are known?
3. If \( d \) were 1 unit, how many notches would there be between points \( A \) and \( B \)?
4. What would the total distance be if there were 6 notches and each was 4 units apart?
5. How can you calculate the distance if the number of notches is unknown?

**Tip:** Always check if the distance is uniformly divided when dealing with number lines or segmented distances.

Line segment AB measures 18 units. A number line with no numbers. A closed circle above the line is labeled A. A closed circle nine notches down the line is labeled B. The space between point A and the next notch is labeled d. What is d, the distance between tick marks on the number line? 1 unit, 2 units, 3 units, 9 units.

Solve the problem of finding the distance between tick marks on a number line where segment AB measures 18 units, and there are 9 notches between points A and B. Learn how to apply division of segments to find the correct distance between each tick mark.

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