The geometric mean of two numbers is the square root of their product:

So, if the product is 8, the geometric mean is 
Answer:
5/2
Step-by-step explanation:
5/2= 2 1/2
while 16/9=1 7/9
Answer:
A: (0,0), B: (3, -4), 5 units
Step-by-step explanation:
A: (0,0), B: (3, -4)
To find the distance, use the distance formula. Square-root((0-3)^2+(0-(-4))^2) ---> Square-root((-3)^2 + 4^2) ---> Square-root(9+16) ---> Square-root(25) ---> 5units.