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
Rama09 [41]
3 years ago
5

PLEASE HELP MEEE ITS VERY URGENT

Mathematics
1 answer:
suter [353]3 years ago
3 0

Answer:

C=31.42

A=78.55

Step-by-step explanation:

C=2\pi r

C=2 \times 3.142 \times 5

C=31.42

A=\pi r^{2}

A=3.142 \times 5^{2}

A=3.142 \times 25

A=78.55

You might be interested in
The mean number of hours of flying time for pilots at Continental Airlines is 49 hours per month. Assume that this mean was base
Effectus [21]

Answer:

a) 17.09 hours

b) The 95% confidence interval estimate of the population mean flying time for the Pilots is between 31.91 hours and 66.09 hours

Step-by-step explanation:

We have the standard deviation of the sample, so we use the t distribution to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 49 - 1 = 48

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 48 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.95}{2} = 0.975. So we have T = 2.0106

The margin of error is:

M = T*s = 2.0106*8.5 = 17.09

s is the standard deviation of the sample. 17.09 hours is the answer for a.

The lower end of the interval is the sample mean subtracted by M. So it is 49 - 17.09 = 31.91 hours

The upper end of the interval is the sample mean added to M. So it is 49 + 17.09 = 66.09 hours

The 95% confidence interval estimate of the population mean flying time for the Pilots is between 31.91 hours and 66.09 hours

8 0
3 years ago
Ay a carnival hamburgers cost $3.50 each and French fries cost $2.00 .A person spends $20.00 buying some hamburgers x and some F
BARSIC [14]

Answer:

(x*$3.50)+(y*$2.00)=$20.00

Step-by-step explanation:

4 0
3 years ago
Look for a pattern for the decimal 0.555, the value of the digit in the tenths place is how many times as munch as the value of
Galina-37 [17]
<span>the value of the digit in the tenths place is 5/10 or 0.5
</span>
the value of the digit in the thousandth place is 5/1000 = 0.005

0.5 = 100 x 0.005

Therefore, the value of the digit in the tenths place is 100 times as much as the value of the digit in the thousandth place
3 0
3 years ago
I don't understand...
Karolina [17]
There both being multiplied by 5
6 0
3 years ago
Read 2 more answers
Find the​ vertex, focus, and directrix of the parabola whose equation is given below. y-7=1/8(x-2)^2
VLD [36.1K]

Answer:

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • The volume of the box above is 540 in3. If L = 18 inches and W = 5 inches, what is the measure of H?
    13·1 answer
  • Say a random useless fact
    12·2 answers
  • Which of the following numbers is a composite number? A. 11 B. 17 C. 23 D. 27
    8·2 answers
  • I need help please!!!​
    10·2 answers
  • BRAINLIEST AND POINTS!! EASY!!!
    15·2 answers
  • The volume of the oblique cylinder is 24 ft3.
    10·2 answers
  • A machine packs boxes at a constant rate of 2/3 of a box every 1/2 minute. Which is the number of boxers per minute that the mac
    11·2 answers
  • on a coordinate grid, her house is located at (1,2) and the park at (5,5) what is the shortest distance from her house to the pa
    10·1 answer
  • Can anyone answer this please
    12·1 answer
  • 4.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!