9514 1404 393
Answer:
(2/5)√10 ≈ 1.26491
Step-by-step explanation:
The geometric mean of a set of n numbers is the n-th root of their product. For two numbers, it is the square root of their product.
g = √((4/5)(2)) = √(8/5) = √(40/25)
g = (2/5)√10 . . . the geometric mean
