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Alex777 [14]
3 years ago
6

A bathtub contains 20 gallons of water. After the drain is opened, there are 14 gallons of water remaining after 30 seconds. Usi

ng this information, how can you describe the rate of change in the amount of water remaining in the tub per second?
a decrease of 0.5 gallons per second


an increase of 0.5 gallons per second


a decrease of 0.2 gallons per second


an increase of 0.2 gallons per second
Mathematics
1 answer:
leva [86]3 years ago
7 0

Answer

a decrease of 0.2 gallons per second

Explanation

The drain was open for 30 seconds.

The water that ran out for 30 seconds = 20 - 14

= 6 gallons

Rate of decrease = (change in gallons)/(time taken)

= 6/30

= 0.2

The rate of change in the amount of water remaining in the tub per second will be the same as the one that ran out since the outlet is the same.

So the correct answer from the choices is "a decrease of 0.2 gallons per second".

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What fraction of the dunk tanks require at least 500 gallons of water? Write the fraction in simplest form.
Cerrena [4.2K]

Answer:

1/2

Step-by-step explanation:

Based on the information observed from the attached box and whisker plot, the Fraction of dunk tanks which requires atleast 500 gallons of water. This fractional value will be the property of plot in the position marked as 500 on the plot. The point which refers to 500 gallons on the plot is the ticked point in between the box. This point represents the median value in a box and whisker plot.

The median value represents the 50th percentile value which relates to half of the distribution. This means that fraction of dunk which requires atleast 500 gallons is : (50/100) = 1/2

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Ji-yoon's bill at the restaurant was $45.10. She left a tip of 18%.
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2 years ago
Marian borrowed money to buy a sound system that costs $450. She is charged 5% simple interest for one year what is the total am
yarga [219]

Marian will pay $472.50 for the sound system if she pays the full amount in one year.

Step-by-step explanation:

Given,

Money borrowed for sound system = $450

Interest rate = 5%

Amount of interest = 5% of money borrowed

Amount of interest = \frac{5}{100}*450

Amount\ of\ interest=\frac{2250}{100}\\\\Amount\ of\ interest=\$22.50

If she pays the amount in one year;

Total amount to be paid = Money borrowed + Amount of interest

Total amount to be paid = $450 + $22.50 = $472.50

Marian will pay $472.50 for the sound system if she pays the full amount in one year.

Keywords: interest, addition

Learn more about addition at:

  • brainly.com/question/10708697
  • brainly.com/question/10710410

#LearnwithBrainly

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