All categories

3 years ago

A circle has a radius of 50 cm. Which of these is the closest to its area?

Mathematics

1 answer:

Genrish500 [490]3 years ago

4 0

Answer:

7,854 cm squared

Step-by-step explanation:

The formula for the area of a circle is ...

A = πr^2

Filling in the given radius gives you ...

A = π(50 cm)^2 = 2500π cm^2 ≈ 7854 cm^2

You might be interested in

Help, please, I’m so confused

mel-nik [20]

Answer:

Uhhh just do all the process corectly :)

6 0

2 years ago

Read 2 more answers

A triangle’s angle measures are in the extended ratio of 2:4:9 find the measures

lidiya [134]

Answer: 24°, 48°, 108°

Step-by-step explanation:

4 0

1 year ago

A certain city divides naturally into ten district neighborhoods. How might a real estate appraiser select a sample of single-fa

Marysya12 [62]

Answer:

An appropriate method is to generate a simple random sample of all single-family homes in the city or a stratified random sample by taking a simple random sample from each of the ten district neighborhoods.

Step-by-step explanation:

Since, the city is very large and it is divided into ten districts. So, collecting sample from one district or any particular are did not give the correct estimate of whole city. So, the appropriate method to collect sample is taking the sample randomly from each district and this type of sampling method is called Stratified Sampling.

8 0

2 years ago

Help binomial distributions

Ymorist [56]

We have the formula to compute the probability of having exactly k successed over n trials, given a probability p of success (and implicitly a probability 1-p of failure), which is

$P(\text{k successed on n trials}) = \binom{n}{k}p^k(1-p)^{n-k}$

Now, the probability of at least 3 successes is the union of the following event: exactly three successes,exactly four successes and exactly five successes.

We can compute their probability and sum them: $\binom{5}{3}\left(\frac{3}{7}\right)^3\left(\frac{4}{7}\right)^2 + \binom{5}{4}\left(\frac{3}{7}\right)^4\left(\frac{4}{7}\right)^1 + \binom{5}{5}\left(\frac{3}{7}\right)^5 \approx 0.36788$

So, the answer is about 36.79%

3 0

2 years ago

a stockbroker charges customers $30 to open an account and $15 per month to manage the account. write an equation to represent t

Andreyy89

30+15n=360 would be your answer

3 0

2 years ago