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
bija089 [108]
3 years ago
5

The area of circular disc is 154cm². find its perimeter​

Mathematics
1 answer:
Veseljchak [2.6K]3 years ago
3 0

Answer:

pee

Step-by-step explanation:

You might be interested in
A candidate for one of Ohio's two U.S. Senate seats wishes to compare her support among registered voters in the northern half o
Radda [10]

Answer:

(0.531-0.45) - 1.96 \sqrt{\frac{0.531(1-0.531)}{2000} +\frac{0.45(1-0.45)}{2000}}=0.050  

(0.531-0.45) + 1.96 \sqrt{\frac{0.531(1-0.531)}{2000} +\frac{0.45(1-0.45)}{2000}}=0.112  

And the best option for this case would be:

A. 0.050 to 0.112.

Step-by-step explanation:

Data given

p_A represent the real population proportion of who support the cnadite for the northern half state  

\hat p_A =\frac{1062}{2000}=0.531 represent the estimated proportion of who support the candidate for the northern half state  

n_A=2000 is the sample size required the northern half state  

p_B represent the real population proportion of who support the candidate for the southern half state  

\hat p_B =\frac{900}{2000}=0.45 represent the estimated proportion of people who support the candidate for the southern half state  

n_B=2000 is the sample size for the northern half state  

z represent the critical value

The confidence interval for the difference of two proportions would be given by this formula  

(\hat p_A -\hat p_B) \pm z_{\alpha/2} \sqrt{\frac{\hat p_A(1-\hat p_A)}{n_A} +\frac{\hat p_B (1-\hat p_B)}{n_B}}  

For the 95% confidence interval the value of \alpha=1-0.95=0.05 and \alpha/2=0.025, with that value we can find the quantile in the normal standard distribution and we got.  

z_{\alpha/2}=1.96  

Replacing into the formula we got:

(0.531-0.45) - 1.96 \sqrt{\frac{0.531(1-0.531)}{2000} +\frac{0.45(1-0.45)}{2000}}=0.050  

(0.531-0.45) + 1.96 \sqrt{\frac{0.531(1-0.531)}{2000} +\frac{0.45(1-0.45)}{2000}}=0.112  

And the best option for this case would be:

A. 0.050 to 0.112.

8 0
3 years ago
???????????????????????????
Pie
X ≈ √17
The number on the number line is roughly 4.1, and if you square 4.1, then you get 16.81, which 17 is the closest to.
8 0
3 years ago
Solve the following system of equations by substitution<br> 2x – 3y = -1<br> y = x - 1
Aliun [14]

Answer:

(4, 3)

Step-by-step explanation:

Plug in x - 1 where y is. The equation will turn in 2x - 3(x - 1) = -1. Distribute, and you'll have 2x -3x + 3 = -1. Combine like terms (2x and -3x) and you'll have -x + 3 = -1. Subtract 3 from both sides, and you'll have -x = -4. Divide by -x (or -1) on both sides, and you'll have x = 4. Since y = x - 1, y = 3, since 4 - 1 = 3. Sorry if this sounds repetitive btw. Good luck :D

7 0
3 years ago
Factor this expression 27 + 33
Yuri [45]
3(9+11)
Your welcome =)
6 0
3 years ago
Find the slope of the line containing the pair of points. ​(​7,​4) and ​(6​,-9​)
lesya [120]

Answer:

13

Step-by-step explanation:

We can use the slope formula to find the slope

m = ( y2-y1)/(x2-x1)

   = ( -9-4)/(6-7)

   = -13/-1

  = 13

3 0
2 years ago
Read 2 more answers
Other questions:
  • A study concludes that 15 percent of all college students attend a gym class.
    7·2 answers
  • Someone Help Me Please ? , It’s Probability
    15·1 answer
  • What is the simplified fraction for 1 1/2 times 5 5/6?
    10·1 answer
  • Order the periods of time from least to greatest.
    11·1 answer
  • The sales tax in indiana is 7% if a t-shirt is sold for $5, how much will you pay total?
    9·1 answer
  • I need to find the area<br><br>there are 3 rectangles and a trapezoid<br><br>show how plz
    5·1 answer
  • Has a slope of -2 and has a y-intercept of (0, -3)
    10·1 answer
  • Solve each system by elimination.<br><br> (Help! I’ll mark you brainly)
    11·1 answer
  • Plz I need help plz plz plz
    12·2 answers
  • Distribute and simplify the radicals below.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!