What is the least perimeter of a rectangle with an area of 32 square feet

1 answer:

3 0

The least perimeter occurs when rectangle is square.

So you can start by taking square root of area; √32

So each side is √32 and there are 4 sides

Hence least perimeter is 4√32 = 16√2 ≈ 22.627.

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Option 1:

Measuring the heights of every fiftieth person on the school roster to determine the average heights of the boys in the school

Comment: this might not be a good idea for fairness as we only wish to determine average height of the boys. Taking a group of 50 people randomly, might not give us the same number of boys every time.

Option 2:

Calling every third person on the soccer team’s roster to determine how many of the team members have completed their fundraising assignment

Comment: The context doesn't seem to need a sampling. The number of players in a soccer team is considerably small. We can find exact data by asking in person.

Option 3:

Observing every person walking down Main Street at 5 p.m. one evening to determine the percentage of people who wear glasses

Comment: To get a more accurate result and fairer sampling, the period of observing could have been longer, for example, observing for 12 hours on that day, or an alternative is to observe at 5 pm for 7 days in a row. It could happen that no one walking down the Main street precisely at 5 pm wears glasses, or it could happen the other way around.

Option 4:

Sending a confidential e-mail survey to every one-hundredth parent in the school district to determine the overall satisfaction of the residents of the town taking a poll in the lunch room (where all students currently have to eat lunch) to determine the number of students who want to be able to leave campus during lunch.

Comment: This sampling does fairly represent the population, although it might be an idea to scale down the sample population, i.e. every fiftieth parent.

Answer: Option 4

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3 years ago

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Bridget is on her middle school’s basketball team. In it’s last game, her team made 31 of it’s shots. Some of those were free th

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Answer:

Step-by-step explanation:

Let the number of free throws = x

And the number of regular field goals = y

Total shots made by the team = 31

Equation for the shots will be,

x + y = 31 ------(1)

If the team gets 1 point for free throws and 2 points for a regular field goal,

x + 2y = 49 --------(2)

[total points gained by the team = 49]

1). Option (2) is the correct option.

2). Subtracting equation (1) from equation (2),

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y = 18

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Answer:

Step-by-step explanation:

Here are the options to this question :

A) 5 to 3

B) 7 to 5

C) 8 to 4

D) 8 to 5

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2 years ago

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Answer:

Calculate

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