Answer:
D) 9.8
Step-by-step explanation:
The geometric mean of two numbers x and y is
[tex]\sqrt{xy}[/tex]
so [tex]\sqrt{8*12}[/tex] = [tex]\sqrt{96}[/tex] [tex]\approx 9.7979[/tex]
Which, since the 9 in the hundredths place is greater than 5, we can round up to 9.8
