A person is canoeing on a river. Her overall speed is 3.4 mile(s) per hour up river and 5.6 mile(s) per hour down river. Find the speed of the river's current and the speed the person can paddle in still water.

a) , b)

Step-by-step explanation:

Overall speeds up river and down river are modelled by following expressions:

Up River

Down River

After some algebraic manipulations, speeds are found:

the arc length is found by finding the circumference of the full circle (2xpixradius) and then dividing by 4 to find just one quarter of the circle (90 degrees).

5.7622

step-by-step explanation:

the ten thousandths place is the 2. you round it up if, that number in whatever place is 5 or higher.