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3 years ago

The circumference of a circular track is 400. Find its radius

Mathematics

1 answer:

nadya68 [22]3 years ago

3 0

Answer:

The radius is 63.69.

Step-by-step explanation:

Given:

The circumference of a circular track is 400.

Now, to find the radius:

So, to get the radius(r) we put the formula of circumference:

$Circumference=2\pi r$

⇒ $400=2\times 3.14\times r$

⇒ $400=6.28\times r$

Dividing both sides by 6.28 we get:

⇒ $63.69=r$

⇒ $r=63.69$

Therefore, the radius is 63.69.

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3 years ago

D is correct!

bagirrra123 [75]

Answer:

The bias most likely to be present in the survey results is;

Option A; This is question wording bias because the survey question attempts to influence subjects’ responses.

Step-by-step explanation:

A bias occurs when a group or outcome is intentionally or unintentionally favored over another group or outcome in the a general population.

There are two main types which are;

- Selection bias which includes; Non - response bias, non representative sample and voluntary bias

- Response Bias which includes wording bias, extreme responses, neutral responses e.t.c

Let's look at each of the options;

Option A; This is correct because what occurred is that the concerned student by telling the adults adverse effect of plastics in our environment, he is indirectly influencing the adults to have a bad mindset about the plastics. He is leading them on by the way he phrased the word to ask the question.

Option B; This is not the reason why it is a response bias. The reason it is a response bias is because he led them on with his wording of the question.

Option C; Like said in Option A & B above, the scenario is that of a response bias since they are giving answers.

Option D; Voluntary response bias is a type of non-response bias and so it is not correct here

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2 years ago

A grocery store sells a 6 pack of bottled water for $3.79 and a 9 pack for $4.50 and a 12 pack for $6.89.which package costs the

Harrizon [31]

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4 years ago

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nexus9112 [7]

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3 years ago

The second of two numbers is 6 times the first. their sum is 84. find the numbers

ddd [48]

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3 years ago

The circumference of a circular track is 400. Find its radius​

The circumference of a circular track is 400. Find its radius