The length of line BE on the given line segment is 3.5 m.
The given parameters:
- <em>Length BD = 3 m</em>
- <em>Length CD = 15 m</em>
- <em>Length AB = 21 m</em>
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The sketch of the given line segments is presented in the diagram uploaded.
The length of BE is determined by applying similar triangle theorem as follows;

Thus, the length of line BE on the given line segment is 3.5 m.
Learn more about similar triangle here: brainly.com/question/11899908
Answer: c
Step-by-step explanation: it is seven lines up and three away from 1 making it 0.7
Answer: See below
Explanation:
(f • g)(-7) = [-8(-7) -6](-7+8)
= (56 - 6)(1)
= (50)(1) = 50