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Marta_Voda [28]
3 years ago
13

Sun, a kayaker, paddles 8 miles upstream (against the current) in 2 hours. Returning to her original location, she paddles downs

tream (with the current) the same distance in 1 hour. The equations represent x, the paddling speed, and y, the speed of the current.2(x – y) = a
Mathematics
1 answer:
Softa [21]3 years ago
4 0
We calculate both velocities:
upstream 8 miles in 2 hours = 4 miles / hour
downstream 8 miles in 1 hour = 8 miles / hour

ps -stream speed = 4 mph
ps + stream speed = 8 mph
Adding both equations
2 ps = 12 mph
paddling speed = 6 mph
stream speed = 2 mph

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3 years ago
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I need to know how to solve this
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2 years ago
Compare the values of the underlined digits.
Fantom [35]

To solve this problem, you have to determine the value of the number 3 in both numbers:

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3 years ago
12 is what percentage of 14
natima [27]

Answer:

85.714%

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You are essentially solving for the percentage of 12/14. Divide:

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0.85714 = 85.714%

85.714% is your answer.

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3 0
3 years ago
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You and your friends find a rope that hangs down 15 m from a high tree branch right at the edge of a river. You find that you ca
Crazy boy [7]

Answer:

Vertical angle=9.5°

Time to reach maximum height = 1.24seconds

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The maximum distance x is reached when rope swings to a maximum height, maximum height is gotten from the equation KE= 1/2MU^2 = MgH = MgL= Mgl(1- cos theta.

Where theta is the vertical angle, U=2m/s and L= 15m

2gl -2glcostheta=U^2

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3 years ago
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