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3241004551 [841]
3 years ago
13

Suppose a circle has its center at the origin. What is the equation of the circle

Mathematics
1 answer:
anyanavicka [17]3 years ago
3 0

Answer:

hey

Step-by-step explanation:

<h2>(x-h)²+(y-k)²=r²</h2>

here (h,k) =(0,0)

<h2>Equation of circle will be</h2>

x²+y²= r²

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The option B is correct option. Thus, the Study design is used is a Case control study.

According to the statement

we have given that the incident cases of MI diagnosed in the emergency rooms of several hospitals is 500 and compared to 1,000 other subjects who visited the same emergency rooms for reasons other than cardiovascular and respiratory diseases.

And we have  to find that the all these type of reports are formed which study method in medical science.

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Case-control study is used in it by the below written way:

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Learn more about Case control study here

brainly.com/question/24087096

Disclaimer: This question was incomplete. Please find the full content below.

Question:

The effect of exposure to high-density automobile traffic either as a bicyclist or pedestrian was compared to minimal or no exposure to automobile traffic. It is hypothesized that direct exposure to automobile traffic has an effect on acute myocardial infarction (MI). This association was studied with 500 incident cases of MI diagnosed in the emergency rooms of several hospitals and compared to 1,000 other subjects who visited the same emergency rooms for reasons other than cardiovascular and respiratory diseases. All subjects were asked to report the amount of time that they spent exposed to high-density traffic over the past month prior to their hospital visit.

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