Twenty students participated in a psychology experiment which measured their heart rates in two different situations.
1 answer:
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Answer:
6.5 miles per hour
Step-by-step explanation:
At first, Jim was paddling against the current for 3 hours. Then, he paddled for 1 hour with the help of the current.
Let x be Jim's rate without the current and y be the rate of the current:
By solving the linear system, we can find the rate of the current y:
The current has a rate of 6.5 miles per hour.