Answer:
let x=rate of the rowing team in still water
x+4=rate of the rowing team with current
x-4=rate of the rowing team against current
travel time=distance/rate
..
90%2F%28x%2B4%29=10%2F%28x-4%29
90x-360=10x+40
80x=400
x=5 rate of the rowing team in still water=5 mph
45/56
5/7 divided 8/9
5/7 times 9/8
45/56
Answer:
Make the picture clearer and bigger
Step-by-step explanation:
The answer is 53 to the power of 6