Question

Allie, Dianna, and Helen all live on the same long straight road. Allie marks the location of Dianna's house and the location of Helen's house on a number line, using her house as 0. She marks Dianna's house at −11.7 and Helen's house at 3.9. What is the distance between Dianna's house and Helen's house on Allie's number line? Enter your answer in the box.

Answer 1

Explanation:

To find the distance between Dianna's house and Helen's house on Allie's number line, we need to calculate the absolute value of the difference between their locations.

Dianna's house is marked at -11.7, and Helen's house is marked at 3.9.

To find the distance between the two points, we subtract the coordinates:

3.9 - (-11.7) = 3.9 + 11.7 = 15.6

The absolute value of 15.6 is 15.6.

Therefore, the distance between Dianna's house and Helen's house on Allie's number line is 15.6 units.