Yes, that is a function. If you have any questions, just ask me. I will be happy to help you.
Answer:
- team: 8 kph
- current: 4 kph
Step-by-step explanation:
The downstream speed is ...
speed = distance / time
speed = 36 km/(3 h) = 12 km/h
The upstream speed is ...
12 km/(3 h) = 4 km/h
__
If b and c represent the speeds of the boat and current, respectively, then we have ...
b + c = 12
b - c = 4
Adding these gives ...
2b = 16
b = 8
c = b -4 = 4
The rate of the rowing team in calm water is 8 km/h; the rate of the current is 4 km/h.
A is correct
Step-by-step explanation:
Answer: 1/10 or 0.1
Step-by-step explanation: 2/5 x 1/4 = 2/20 or simplified 1/10
perimeter = sum of all sides
27 = 9+7.8+x
x (third side) = 10.2