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Alexxandr [17]
3 years ago
6

José sets up computers. He has been working

Mathematics
1 answer:
lakkis [162]3 years ago
3 0
Correct answer should be= 1.5 hours.
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Select all the properties of a right triangle.
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Sorry sis don't know the meaning

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2) Prove that these two lines are parallel:
borishaifa [10]

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if the two lines have the same slope that means they are parallel

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Which graph represents the function?
mario62 [17]
For this function we can find y-intercept.
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Determine what type of observational study is described. Explain. Researchers wanted to determine whether there was an associati
34kurt

Answer:

B. The observational study is a cross-sectional study because information is collected at a specific point in time.

Step-by-step explanation:

1) There are three types of Observational Studies: Case-control, cross-sectional and Cohort.

2) Since the researchers collected information from those 1800 adults at a certain time, then we can call it a cross-sectional study. It does not provide solid results since the research was not done over a period to collect further information. We don't know, for example, much more than what that association deeply mean.

3) If we wonder more, then the researchers would have to track those adults over a given period, i.e. a Cohort would be necessary.

4) Moreover, it's not "retrospective" for virtually every question, always makes us look back somehow, and it does not categorize a kind of observational study.

6 0
3 years ago
YOU CAN CHANGE SUBTRACTION TO ADDITION, BUT YOU DON'T CHANGE ADDITION TO SUBTRACTION WHEN CALCULATING INTEGERS?
olya-2409 [2.1K]

Step-by-step explanation:

<h2>a - b = a + (-b)</h2><h2>a + b = a - (-b)</h2>

for any real numbers

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