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r-ruslan [8.4K]
2 years ago
8

Joan wants to estimate the average number of people who purchase breakfast on flights between two cities. She decides to randoml

y select 10 flights from all available data in the past year and use all the purchasing records from these flights in order to estimate the average. What type of sampling is Joan using?​
Mathematics
1 answer:
Lubov Fominskaja [6]2 years ago
8 0

The sampling that Joan is using is known as cluster sampling.

<h3>What is sampling?</h3>

It should be noted that sampling simply neans when a sample of a population is taken in order to illustrate the characteristics of the entire population.

In this case, the sampling that Joan is using is known as cluster sampling. This was depicted as she randomly select 10 flights from all available data in the past year.

Learn more about sampling on:

brainly.com/question/17831271

#SPJ1

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Answer:

For the given functions f(x) and g(x) (f-g)(x) = -2x^{2}  - 8x +12

Step-by-step explanation:

Here, the given function are:

f(x)  = 3x^{2}  - 2x+ 4\\g(x) = 5x^{2}  + 6x -8

Now, simplifying for (f-g)(x)  =  f(x) -  g(x):

f(x) - g(x)  = (3x^{2}  - 2x+ 4) - (5x^{2}  + 6x -8)

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Doing operation on LIKE TERMS,  we get

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Hence, for the given functions f(x) and g(x) (f-g)(x) = -2x^{2}  - 8x +12

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Answer:

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Please check the attached figure to visual the concept.

Step-by-step explanation:

In Mathematics Geometry,<em> lateral face</em> is said be the side of a 3D-figure in that is not a base.

The faces in in a prism or pyramid which are not bases are basically the lateral faces.

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