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
IgorC [24]
3 years ago
9

Calculate the radius of the circular rug. Use 3.14 for π. area of rug: 153.86 feet

Mathematics
2 answers:
irakobra [83]3 years ago
5 0

Answer:

7 ft

Step-by-step explanation:

The area of a circle is given by

A = pi r^2

153.86 = 3.14 r^2

Divide each side by 3.14

153.86 / 3.14 = r^2

49 = r^2

Take the square root of each side

sqrt(49) = sqrt(r^2)

7 = r

Vikentia [17]3 years ago
3 0
The best and correct answer is 7
You might be interested in
The population standard deviation for the heights of dogs, in inches, in a city is 3.7 inches. If we want to be 95% confident th
Aleks04 [339]

Answer:

The minimum sample size that can be taken is of 14 dogs.

Step-by-step explanation:

The formula for calculating the minimum sample size to estimate a population mean is given by:

n=\frac{z^{2}\sigma^{2}}{e^{2}}

The <u>first step</u> is obtaining the values we're going to use to replace in the formula.

Since we want to be 95% confident, 1-\alpha=0.95 \Rightarrow \alpha=0.05.

Therefore we look for the critical value z_{\alpha/2}=1.96.

Then we calculate the variance:

\sigma = 3.7 \Rightarrow \sigma^{2}=13.69

And we have that:

e=2 \Rightarrow e^{2}=4

<u>Now</u> we replace in the formula with the values we've just obtained:

n=\frac{1.96^{2}*13.69}{4}=13.1479\approx 14

Therefore the minimum sample size that can be taken to guarantee that the sample mean is within 2 inches of the population mean is of 14 dogs.

6 0
3 years ago
How are natural numbers, whole numbers and integers used in everyday life?
Nezavi [6.7K]
Natural numbers: Counting things! You look around your room and see an electronic device, then another, then another! You just counted to 3 using the natural numbers.

Whole numbers! You try to look for electronic devices and realise that they’re all gone. You have zero electronic devices, and you just used whole numbers.

You go online to find where your electronic devices went, and realise they were taken because you’re in debt to the bank so they took some of your stuff. You’re in negative numbers, and now you’ve used integers.
4 0
2 years ago
URGENT!!!! PLEASE HELP NOW!!! WHO EVER GIVES THE CORRRECT ANSWER WILL GET BRAINLIEST!!!
sladkih [1.3K]

Answer:

The correct ans is..... ( which i believe )

3rd option

Hope this helps...

Pls mark my ans as brainliest

If u mark my ans as brainliest u will get 3 extra points

3 0
3 years ago
Read 2 more answers
Consider triangle ABC.
shusha [124]
Give me a second to get the answer and I’ll text you back
8 0
3 years ago
Read 2 more answers
Which expression is equivalent to 1/4 Y - 1/2? PLEASE HELP!!!
algol13

Answer:

Option 2

Step-by-step explanation:

¼Y - ½

= ¼Y - 2/4

= ¼(Y - 2)

4 0
2 years ago
Read 2 more answers
Other questions:
  • X + 7 = 7<br> 7x + y = 1
    8·2 answers
  • Quick guys what is the fraction form of 8 1/3%?
    14·1 answer
  • $7,600 total sales, 4% commission rate.
    11·2 answers
  • What’s the answer to this question?
    12·1 answer
  • Please answer this correctly
    12·2 answers
  • What is the slope of the line below? If necessary, enter your answer as a
    9·1 answer
  • Ggl meet code jgz-inwt-sdp
    6·2 answers
  • What are the coordinates of the dilation of a square ABCD by a scale factor of ?
    12·2 answers
  • PLZ HELP NEED RN!!!!!
    15·2 answers
  • He temperature moreased by 8' Fahrenheit
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!