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andrey2020 [161]
3 years ago
8

How do you find the circumference of a circle? What is the formula?

Mathematics
1 answer:
victus00 [196]3 years ago
8 0

Answer:

\pi r2 or \pi d

Step-by-step explanation:

To find the circumference, you must first find either the diameter or the radius.

To find the diameter, you can multiply the radius twice.

To find the radius, you can divide the diameter by 2.

Once you have the diameter, you then multiply it by pi, also known as 3.14.

OR

Once you have the radius, you them multiply it by pi, also known as 3.14, and then multiply your product by 2.

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1+4=5,2+5=12,3+6=21,8+11=?
elena55 [62]
50, because 21 + 8 = 39 + 11 = 50
4 0
3 years ago
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What happens to the function f(x)=x^4 when it becomes f'(x)=x^4+5
il63 [147K]

Answer: It will move up 5 spaces on the y-axis.

Step-by-step explanation: y=mx+b where b is the y-intercept (where it will be on the y-axis). In the 1st one it doesn’t have a b so there is no y-intercept so it will pass through point (0,0). In the 2nd one since your adding 5 it will now pass through point (0,5). Because it shifted up 5 on the y-axis.

3 0
3 years ago
A cubic meter of elm is 600kg and a cubic meter of pine is 350kg. What is the ratio of the pine's mass to the elm's mass?
Darya [45]
The ratio from pine to elm is pine/elm
so, pine/elm
1. Plug it in  350/600
2. Simplify   7/12
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4 0
4 years ago
Suppose that 3\%3%3, percent of over 200{,}000200,000200, comma, 000 books borrowed from a library in a year are downloaded. The
sleet_krkn [62]

Answer:

The mean of the sampling distribution of the proportion of downloaded books is 0.03 and the standard deviation is 0.0197.

Step-by-step explanation:

Central Limit Theorem

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean \mu = p and standard deviation s = \sqrt{\frac{p(1-p)}{n}}

3% of books borrowed from a library in a year are downloaded.

This means that p = 0.03

SRS of 75 books.

This means that n = 75

What are the mean and standard deviation of the sampling distribution of the proportion of downloaded books

By the Central Limit Theorem

Mean: \mu = p = 0.03

Standard deviation: s = \sqrt{\frac{p(1-p)}{n}} = \sqrt{\frac{0.03*0.97}{75}} = 0.0197

The mean of the sampling distribution of the proportion of downloaded books is 0.03 and the standard deviation is 0.0197.

4 0
3 years ago
A teacher collects data on the number of hours, s, his students spend studying and the number of hours, t, they spend watching T
Rom4ik [11]
The answer is B. The model suggests that students study about 3.6 hours each day
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4 years ago
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