Answer:
3
Step-by-step explanation:
Fraction? They are already decimals
The height of the water tank is 6.
L x W x H = V (volume)
15 x 10 x 6 = 900 cubic feet
<span>When order does not matter you use what is called n choose k formula
n!/(k!(n-k)!) where n is the number of things to choose from and k is the number of choices made, in this case:
20!/(4!(20-4)!)=4845</span>