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wariber [46]
3 years ago
15

How many variables are in the following expression 3x+4y+z

Mathematics
2 answers:
arsen [322]3 years ago
8 0

Answer:

3

Step-by-step explanation:

Murljashka [212]3 years ago
3 0

Answer: 3

Step-by-step explanation:

X,Y,Z

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Determine whether the statement is true or false. If it is false, rewrite it as a true statement. The method for selecting a str
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The method for selecting a stratified sample is to order a population in some way and then select members of the population at regular intervals. - FALSE.

This can be re written as :The method for selecting a systematic sample is to order a population in some way and then select members of the population at regular intervals.

Explanation for stratified sampling:

In stratified sampling, the members of a population are divided into two or more strata with similar characteristics and then a random sample is selected from each strata. This way ensures that members of each group within a population will be sampled.

Explanation for cluster sampling:

The method for selecting a cluster sample is to order a population in some way and then select members of the population at regular intervals.

In cluster sampling, the population is divided into​​ clusters, and all of the members of one or more​ clusters are selected.

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4 years ago
You entered a contest through your local television station. There is one first prize of a new car! There are 5 second place pri
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Answer:

\frac{1}{400} or 0.0025 0r 0.25%

Step-by-step explanation:

There are three categories that will get a prize

1) First place = 1 person

2) Second place = 5 persons

3) Third place = 20 persons

A total of 26 people will get prizes.

However, we want to determine your chance to win one of the second place prizes

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This means out of a total of 2000 people, you could be among the 5

i.e 5 out of 2000

This is \frac{5}{2000} = \frac{1}{400} = 0.0025

This means you have a chance of 1 out of 400

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false

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