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
photoshop1234 [79]
2 years ago
14

What is the formula for the area A of a circle in terms of the radius r?​

Mathematics
1 answer:
svet-max [94.6K]2 years ago
5 0

Answer:

n * r ^2

Step-by-step explanation:

You might be interested in
an outdoor deck is 7 feet wide the perimeter of the deck is 64 feet what is the length of the deck use the numbers to write an e
ycow [4]
Answer: 25

Equation:
2(7)+2(x)=64
14+2x=64
2x=64
X=25

Hope this helps :)
5 0
2 years ago
How many weeks of data must be randomly sampled to estimate the mean weekly sales of a new line of athletic footwear? We want 98
Irina18 [472]

Answer:

n=(\frac{2.33(1400)}{400})^2 =66.50 \approx 67

So the answer for this case would be n=67 rounded up

Step-by-step explanation:

Information given

\bar X represent the sample mean for the sample  

\mu population mean

\sigma=1400 represent the sample standard deviation

n represent the sample size  

Solution to the problem

The margin of error is given by this formula:

ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}    (a)

And on this case we have that ME =400 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

n=(\frac{z_{\alpha/2} \sigma}{ME})^2   (b)

The critical value for 98% of confidence interval now can be founded using the normal distribution. And the critical value would be z_{\alpha/2}=2.33, replacing into formula (b) we got:

n=(\frac{2.33(1400)}{400})^2 =66.50 \approx 67

So the answer for this case would be n=67 rounded up

8 0
3 years ago
If the measure of is 232°, what is the measure of ∡DEF?.
riadik2000 [5.3K]

To answer this specific problem, the measure of ∡DEF is 64. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

3 0
2 years ago
Need help with this asap plz❤️
BigorU [14]

What question are you needed answers to?

6 0
3 years ago
Eric's average income for the four months of the year 1450 point to $5 what must be his average income for the remaining eight m
Zielflug [23.3K]

Answer:

$2668.63

Step-by-step explanation:

If the average of 4 months is $5

Meaning the total sum for 4 months

4×5 =$20

If the average for the year was $1780.75​

It means the total sum for a year is;

$1780.75​×12 =$21369

This means the money received for the remaining 8 months is;

$21369-$20=$21349

Hence the average income for the remaining 8months is ;

The total amount for 8 months / 8;

$21349/8= $2668.625

$2668.63

8 0
2 years ago
Other questions:
  • Suppose $10000 is deposited in a bank at 3.5% annual interest. what is the interest earned after one year
    14·1 answer
  • What is the correct order of the fractions from least to greatest? Point A: −11 3 Point B: −2 3 Point C: 1 3 Point D: −12 3 The
    12·2 answers
  • I don’t know what it is :(
    14·2 answers
  • Please helppp [(7-3)x2+6]x3 using Pemdas
    7·2 answers
  • A teacher places 6 marbles in a bag. There are 1 blue marbles, 2 red marbles and 3 yellow marbles. A student draws one marble fr
    6·1 answer
  • What is -2+4n/5=6<br> I really need help
    11·1 answer
  • What is the measure of angle a?​
    5·1 answer
  • A 6-column table with 3 rows. Column 1 has entries females, males, total. Column 2 is labeled Jazz with entries 50, blank, 58. C
    6·1 answer
  • *Arianators Know*
    14·1 answer
  • At the start of 2014 Lucy's house was worth £200 000
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!