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Svet_ta [14]
4 years ago
14

Andy is kayaking on a river in Morgan County, moving down the river at a speed of 10 miles per hour. Meanwhile, Tatsu is on a je

t ski 11 miles away, moving up the river at 20 miles per hour. How long will it be before the two meet? (answer in how many hours and minutes)
Mathematics
1 answer:
posledela4 years ago
7 0
The answer is 22 minutes:

20x for Tatsu and 10x for Andy

30x = 11

x = 11/30

11/30 * 60 = 22
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When four times a number is decreased by 7, the result is 1. What is the number?
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Answer: The number is 1.

Step-by-step explanation:

create the formula from the problem

4x -7 = 1

move the seven to the other side by adding seven to both sides

4x (+7) -7 = 1 (+7)

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then to get the x by itself, divide both sides by 4

4x/4 = 8/4

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You can check your work by plugging the x back into the original problem

4 (2) -7 = 1

8 -7 = 1

1 = 1  (this means it is correct)

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Hello There!

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Hope This Helps You!
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