3 years ago

Round 3.399 to the nearest hundredths

Mathematics

1 answer:

Andreyy893 years ago

4 0

The answer is 3.40 since you rounded to the hundredths place and not the tenths.

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A boat race takes place in Detroit every summer. The first boat to travel 3 miles upstream and back will win the race. If the ri

kakasveta [241]

Answer:

The speed of the boat in still water u = 8 $\frac{mi}{hr}$

Step-by-step explanation:

Let speed of the boat = u $\frac{mi}{hr}$

Speed of the current = v $\frac{mi}{hr}$ = 4 $\frac{mi}{hr}$

Given that the first boat to travel 3 miles upstream and back in a total 1 hour.

$\frac{3}{u - v} + \frac{3}{u + v} = 1$

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$u^{2} - v^{2} - 6 u = 0$

Since v = 4

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By solving above equation

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⇒ u = 8 $\frac{mi}{hr}$

This is the speed of the boat in still water.

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4 years ago

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Answer:

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Step-by-step explanation:

This is the expanded form of 3.425.

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