What is the mean proportional between 9 and 16?
A. 13
B. 12.5
C. 12
D. 7
1 answer
Best answer
Answer: C. 12
Answer: (C) 12
Mean proportional = \(\sqrt{9 \times 16} = \sqrt{144} = 12\).
Trap: 12.5 is the average, not the mean proportional.
Doubtly AI
· 27 Oct 2026
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