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UNO [17]
3 years ago
9

Determine whether the situation calls for a survey, an observational study, or an experiment.

Mathematics
1 answer:
IrinaVladis [17]3 years ago
6 0

Answer:

This situation calls for a survey.

Step-by-step explanation:

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14. A salad recipe that serves 10 people requires 1 1/2 cups of celery. To serve 5 people, the amount
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Answer:

3/4 cups

Step-by-step explanation:

10 people = 1 1/2 cups

Changing to a mixed number

10 people = 3/2 cups

Divide by 2

10/2 people = 3/2*1/2

5 people = 3/4 cups

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B i think i am sorry if it is not right but i am pretty sure i am right tho

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3 years ago
Guesstimate how much total time do Americans spend driving in one year? Express the answer in hours, years and lifetimes.
Drupady [299]

Answer:

1,460 hours per year.

113,880 hours in a lifetime.

Step-by-step explanation:

Great question, it is always good to ask away and get rid of any doubts that you may be having.

Let's assume that on an average day Americans drive 4 hours a day. This includes going and coming from work as well as any groceries they might need to do. Since there are 365 days in a year we can multiply this by the hours a day driven.

365*4 = 1,460

We can "guesstimate" that on average an American drives 1,460 hours per year.

Based on my research the average lifetime of an American is 78 years old. We can now multiply this by the number of hours driven in a year to have an idea of the number of hours driven in a lifetime.

1,460*78 = 113,880

On average we "guesstimate" that an American drives 113,880 hours in a lifetime.

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

7 0
3 years ago
3. A ____ is sometimes a rectangle.
icang [17]

Answer:

<h3>⇒ A. Parallelogram</h3>

Step-by-step explanation:

A parallelogram is sometimes a rectangle.

  • Parallelograms have four sides.
  • A square has four sides.
  • Rectangle have four sides.

<u>Therefore, the correct answer is "A. Parallelogram".</u>

I hope this helps. Let me know if you have any questions.

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2 years ago
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