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aleksandrvk [35]

3 years ago

8

a boat travels 36 miles downstream in 2 hours and returns upstream in 6 hours. find the speed of the current and the speed of th

e boat in still water

1 answer:

Tamiku [17]3 years ago

8 0

Answer:

3 miles per hour stream

Step-by-step explanation:

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tino4ka555 [31]

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denpristay [2]

Answer:

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Step-by-step explanation:

This is much easier to solve if you draw it out on a graph. The perimeter is the sum of all the sides. I used the Pythagorean theorem to find the hypotenuse.

${a}^{2} + {b}^{2} = {c}^{2} \\ c = \sqrt{ {a}^{2} + {b}^{2} }$

$dc = \sqrt{ {3}^{2} + {1}^{2} } = \sqrt{10} \\ cf = 1 \\ fe = \sqrt{ {4}^{2} + {2}^{2} } = \sqrt{20} \\ de = \sqrt{ {1}^{2} + {4}^{2} } = \sqrt{17} \\ \sqrt{10} + 1 + \sqrt{20} + \sqrt{17} = 12.76$

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Aleksandr-060686 [28]

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7/20

Step-by-step explanation:

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