Understanding Hose Rates and Quadratic Equations

The video tutorial explains how to determine the time it takes for two hoses to fill a pond, both individually and together. The faster hose fills the pond 10 minutes quicker than the slower one. By converting the time taken by each hose into a rate of ponds per minute, the tutorial demonstrates how to combine these rates to find the total time taken when both hoses work together. The solution involves solving a quadratic equation to find the individual times for each hose, concluding that the faster hose takes 20 minutes and the slower hose takes 30 minutes to fill the pond alone.

What is the time difference between the two hoses when filling the pond individually?

• 5 minutes

• 20 minutes

• 10 minutes

• 15 minutes

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CCSS.HSA.CED.A.1

How is the rate of each hose expressed in terms of ponds per minute?

• f and f+10

• 1/f and 1/(f+10)

• f/10 and f+10

• 10/f and 10/(f+10)

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CCSS.HSA.CED.A.1

What is the combined rate of the two hoses in terms of ponds per minute?

• 1/12

• 1/15

• 1/20

• 1/10

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CCSS.8.EE.C.7B

What type of equation is used to solve for the time taken by each hose?

• Quadratic equation

• Linear equation

• Exponential equation

• Cubic equation

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CCSS.6.EE.B.7

What happens to the equation when both sides are multiplied by 12?

• The equation remains unchanged

• Fractions are eliminated

• It becomes a linear equation

• It becomes a cubic equation

What is the time taken by the faster hose to fill the pond?

• 40 minutes

• 30 minutes

• 20 minutes

• 10 minutes

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CCSS.HSA.CED.A.1

What is the time taken by the slower hose to fill the pond?

• 35 minutes

• 20 minutes

• 25 minutes

• 30 minutes

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CCSS.HSA.CED.A.1

If both hoses work together, how long do they take to fill the pond?

• 10 minutes

• 12 minutes

• 15 minutes

• 18 minutes

What is the significance of the negative solution in the quadratic equation?

• It represents the time taken by the faster hose

• It is the correct solution for the problem

• It represents the time taken by the slower hose

• It is not a valid solution for time

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CCSS.HSA.CED.A.1

Why does it make sense that the combined time is slightly more than half of the faster hose's time?

• Because the slower hose is much slower

• Because the slower hose contributes significantly

• Because the faster hose is twice as fast

• Because the combined rate is exactly half

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CCSS.HSA.CED.A.1