TEACHER-GUIDE-VERIFIED · TG-V9-040

5. An ellipse has closest distance 120 and farthest distance 180 units. Find their mean as a center-distance estimate.

Verified solution

Solution: (120+180)/2 = 150 units.

Source: Teacher Guide V9 · English V9. Match the numbers and wording in your printed question before using this solution.

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VIDEO HELP · TG-V9-040

Average the Closest and Farthest Distances (TG-V9-040)

Average the closest and farthest distances: (120 + 180) / 2 = 150 units. Check that the result lies 30 units from each value. This is the requested center-distance estimate, not an orbital average over time.

Space Math Explorers · approved worked example · 1:09 · Watch on YouTube

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These pages reproduce verified solution steps for the registered V9 questions. It does not diagnose learning needs or replace instruction from a qualified teacher or tutor.