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Tamiku [17]
2 years ago
15

Please help due soon and 50pts

Mathematics
1 answer:
hjlf2 years ago
6 0

Answer: A

Step-by-step explanation:

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Paulina swims 5 miles down a creek with a current for 2 hours. It takes her 4
Westkost [7]

Answer: her swimming speed = 1.875 mph

Speed of current = 0.625 mph

Step-by-step explanation:

Let x represent her swimming speed.

Let y represent the speed of the current.

Paulina swims 5 miles down a creek with a current for 2 hours. Since this is faster, it means that she swam with the current. Her total speed would be (x + y) mph

Distance = speed × time

Therefore,

5 = 2(x + y)

dividing both sides by 2, it becomes

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It takes her 4 hours to swim the same 5 miles back to her original destination against the

same current. It means that her total speed was (x - y) mph

Distance covered would be

5 = 4(x - y)

Dividing both sides by 4, it becomes

1.25 = x - y- - - - - - - 2

Adding equation 1 to equation 2, it becomes

3.75 = 2x

x = 3.75/2

x = 1.875

Substituting x = 1.875 into equation 1, it becomes

2.5 = 1.875 + y

y = 2.5 - 1.875

y = 0.625

4 0
3 years ago
6x - 2(x + 4) = 6 + 2x
Minchanka [31]

Answer:7

Step-by-step explanation:

Simplifying, 6x-2x-8 = 6 + 2x

4x -8 = 6 + 2x

2x =14

x=7

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Korolek [52]

Answer:

H

Step-by-step explanation:

The amount of hours he has worked would be x 8$

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A box contains 5 blue marbles 3 red marbles and 6 white marbles. if three marbles are drawn, without replacement, what is the pr
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The probability that all three are blue it's 3:14
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I NEED HELP ASAP
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