Question

geometric mean of 8 and 18​

Answer 1

Answer:
12

Explanation:
The geometric mean of two positive numbers
a
and
b
is
√
a
b
. The ratio
a
:
√
a
b
is equal to the ratio
√
a
b
:
b
.
So the geometric mean of
8
and
18
is:
√
8
⋅
18
=
√
144
=
12

Notice that
12
8
=
3
2
=
18
12

Answer 2

$\sqrt{8 \times 18} = {x}^{2} \\ \sqrt{144} = x \\ 12 = x$

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