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Veseljchak [2.6K]
3 years ago
6

a motorboat traveled for 2 hours with an 8km/h current. the return trip against the same current took 3 hours. find the speed of

the motorboat in still water.
Mathematics
1 answer:
Neporo4naja [7]3 years ago
6 0

Let x be the unknown speed, y the unknown distance.

distance equals speed times time.

"With" an 8kph current means our speed is x+8. 2 hours with an 8 kph current gets is a distance y:

y = 2(x + 8)

Against the current, speed x-8, took 3 hours to go y:

y = 3(x-8)

Equating,

2(x+8)=3(x-8)

2x + 16 =3x - 24

40 = x

Answer: 40 km/h

Check: 2(40+8)=96 km. 3(40-8)=3(32)=96 km. Equal, good.

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You want to buy new pair of Air Jordans but you don’t have the money for them you borrow 130 from your sister to buy the shoes t
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You do not have enough money to pay your sister back and the amount left is $29

<h3>A. Do you have enough money to pay your sister back? </h3>

The given parameters are:

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<h3>How much money left</h3>

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Round 6.487 and 2.049 to the hundredths place.<br><br> What is the sum of the rounded numbers?
sergey [27]

Hello there! 6.487 rounded to the nearest hundredths place is 6.49 and 2.049 rounded to the hundredths place is 2.05. The sum of these numbers is 8.54.

Remember: If the number value after the value you are rounding is equal to or greater than 5, round up. If it is less than 5, round down.

With this in mind, let's round the numbers:

First: 6.487 rounded to the hundredths place would be 6.49, since 7 is greater than 5.

Second: 2.049 rounded to the hundredths place would be 2.05, since 9 is greater than 5.

Next, we will add the numbers together

2.05 + 6.49 = 8.54.

So, this is our final answer. I hope this answers your question & have a great day! :)

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