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svlad2 [7]
3 years ago
11

Which two of the following are not characteristics of surveys?

Mathematics
1 answer:
OLEGan [10]3 years ago
4 0

Answer: A. The study compares two or more treatments (possibly including "no treatment").  

               C. The study involves one or more treatment groups and a control group.

Step-by-step explanation:

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Answer:

1 1/2 or 1.5

Step-by-step explanation:

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alexgriva [62]

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Step-by-step explanation:

49x² - 121

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Step-by-step explanation:

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alexdok [17]

Answer:

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Step-by-step explanation:

An easy way to do this is to convert to decimals

1/4 = 0.25

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Now, for the numbers for this problem.

2 3/4 would be equal to 2.75

3 1/2 would be equal to 3.5

Add those two numbers together and you get 6.25

Subtract that from 8 and you get 1.75 or 1 3/4

3 0
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