1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
NeTakaya
3 years ago
10

Find the area of the following circle. r=9 yd. Area = square yards.

Mathematics
2 answers:
Katen [24]3 years ago
4 0
81pie square yards, the formula of area of circle is pie•r cubed,
Yanka [14]3 years ago
3 0

Answer:

Step-by-step explanation:

Area = \pir^{2}

= 81\pi

= 254.47 square yards (to 2dp)

You might be interested in
Find the center of the circle (x-2)^2+(y-8)^2=33
enyata [817]

Answer:

The center is (2,8)

Step-by-step explanation:

The equation of a circle is written as

(x-h)^2+ (y-k)^2 = r^2

where ( h,k) is the center and r is the radius

(x-2)^2+(y-8)^2=33

The center is (2,8) and the radius is sqrt(33)

6 0
3 years ago
Write an expression that represents n plus 7 multiplied by 3.
diamong [38]
The <span>expression that represents n plus 7 multiplied by 3 is
(n + 7)(3)
The entire expression, (n + 7) is multiplied by 3 since it would be inconvenient to state the expression as given above if what is meant was
(n + 7x3). It would have simply been n plus 21.</span>
7 0
3 years ago
Read 2 more answers
Multiply 4 and 7. Then, divide by q.
Makovka662 [10]

Answer:

28/q

Step-by-step explanation:

4 times 7 equals 28 and then divide 28 by q

5 0
3 years ago
What is the distance between 4 and 7?
Varvara68 [4.7K]

Answer:

The distance between 4 and 7 is : 3

4 0
3 years ago
Read 2 more answers
6. Assume that a component passes a test is 0.85 and that components perform independently. What is the probability that the thi
Tanzania [10]

Answer:

3.90% probability that the third failure will occur on the tenth component tested

Step-by-step explanation:

For each component, there are only two possible outcomes. Either it fails, or it does not fail. Components perform independently. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

Assume that a component passes a test is 0.85

So they fail with probability of p = 1 - 0.85 = 0.15

What is the probability that the third failure will occur on the tenth component tested

First 9 components: Two failures, that is, P(X = 2) when n = 9.

10th component: Failure with probability 0.15.

So

P = 0.15P(X = 2)

In which

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 2) = C_{9,2}.(0.15)^{2}.(0.85)^{7} = 0.2597

So

P = 0.15P(X = 2) = 0.15*0.2597 = 0.0390

3.90% probability that the third failure will occur on the tenth component tested

5 0
3 years ago
Other questions:
  • 0.05 is 1/10 the value of
    15·2 answers
  • You start with the equation 12b=24 . What step should you take to find the quantity that equals 4b?
    14·1 answer
  • An insurance office has 65 employees. If 39 of the employees have cellular​ phones, what portion of the employees do not have ce
    5·2 answers
  • Consider the function y=f(x)=3x. The values of f(1/2) and f(1/4), rounded to the nearest hundredth, are_______ and__________ , r
    7·1 answer
  • A<br>real<br>number has a blank that can described as rational or<br>irrational?​
    7·1 answer
  • What is 6 11ths as a decimal?
    10·1 answer
  • A store randomly samples 603 shoppers over the course of a year and finds that 142 of them made their visit because of a coupon
    9·1 answer
  • ian went away for 6 days to space camp.his parents received 12 emails from him while he was away.what is the rate of ians emails
    9·1 answer
  • What was the average yearly increase at the university of Raleigh for those four years ?
    7·1 answer
  • Y_(1)=3(5x-9)-3,y_(2)=8(x-5)+15,y_(1)=y_(2)
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!