Straight lines can be divided into different segments
The value of DE is 23 units
We have:


Segment DF and EF have the same endpoint.
This means that, point E is located on segment DF
So, we have:

Substitute known values

Collect like terms


Hence, the value of DE is 23 units
Read more about line segments at:
brainly.com/question/15754081
Answer:
domain: (-∞ , ∞) ; range: f(x) ≥ 3
Step-by-step explanation:
domain: (-∞ , ∞) ; range: f(x) ≥ 3