Question

deleted

Answer 1

geometric mean of x and y
equals √(xy)

Answer 2

So the answer would be sqrt21?

Answer 3

yes yes

Answer 4

if it was the geometric mean of three terms
it would be \(\sqrt[3]{xyz}\)

Answer 5

you should learn that if x is the geometric mean, then these two ratios are equal:
\[\frac{3}{x}=\frac{x}{7}\]

Answer 6

yes

Answer 7

Thank you both. :)