Question

The mean proportion between 4 and 9

Answer 1

Answer:

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Step-by-step explanation:

Answer 2

Answer:

6 is the mean proportion between 4 and 9

let mean =x

a:x::x:b

4:x::x:9

4/x=x/9

${x}^{2} = 36 \\ x = \sqrt{36} \\ x = 6$