answer.
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
quester [9]
2 years ago
7

Circletown's limits form a perfectly circular shape. It has a population of

Mathematics
2 answers:
Iteru [2.4K]2 years ago
5 0

Answer:

3.64 Km.

Step-by-step explanation:

Given,

Total population = 20,000 people

Population density = 480 people per square kilometer

Area of the circle town

A = \dfrac{20000}{480}

A = 41.667\ km^2

Radius of the circle town

\pi r^2 = 41.667

r = 3.64\ km

Hence, the radius of circle town is equal to 3.64 Km.

alexgriva [62]2 years ago
4 0

Answer:

3.64

Step-by-step explanation:

You might be interested in
In circle E, and are diameters. Angle BCA measures 53°. Circle E is shown. Line segments A C and B D are diameters. Lines are dr
yuradex [85]

Answer:

74

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
"Which of the following are continuous functions? (Select all that apply.)
Natasha2012 [34]

Answer:

  □ The temperature at a specific location as a function of time.

  □ The temperature at a specific time as a function of the distance due west from New York City.

  □ The altitude above sea level as a function of the distance due west from New York City.

Step-by-step explanation:

Temperature tends to vary continuously over distance and time.

Altitude rarely changes so abruptly we'd have to say it is a discontinuous function. Even a cliff has a (very high) defined slope.

Taxi charges tend to increment according to a rate schedule. That is, for each passing minute or fraction of a mile, the amount due jumps to a new value. We'd have to say those are discontinuous.

The nature of electrical circuits is such that current is never discontinuous. Even when the circuit is disconnected by a switch, the arcing at the switch contacts ensures the current is continuous as it rapidly goes to zero.

8 0
2 years ago
Which statements describe an object in motion that has no external force acting on it? Check all that apply.
Step2247 [10]

Answer: it moves at a constant speed and stays in the same direction

Step-by-step explanation:

It does this because there is no friction or nothing pushing on it therefore there is nothing to slow it down or speed it up

5 0
2 years ago
Read 2 more answers
The owners of Expo Company John Smith and Susan Jones invested $240,000 and $160,000 into the business respectively. What percen
Troyanec [42]

Answer:

40%.

Step-by-step explanation:

We have been given that the owners of Expo Company John Smith and Susan Jones invested $240,000 and $160,000 into the business respectively. We are asked to find the percentage of business owned by Susan.

Let us figure out total money invested in business by adding the money invested by John Smith and Susan Jones.

\text{Total money invested in business}=\$240,000+\$160,000

\text{Total money invested in business}=\$400,000

Now we will find $160,000 is what percent of $400,000.

\text{Percentage of business Susan own}=\frac{160,000}{400,000}\times 100

\text{Percentage of business Susan own}=0.4\times 100

\text{Percentage of business Susan own}=40

Therefore, Susan owns 40% of the business.

5 0
2 years ago
A factory makes propeller drive shafts for ships. A quality assurance engineer at the factory needs to estimate the true mean le
borishaifa [10]

Answer:

1000-1.96\frac{2}{\sqrt{4}}=998.04    

1000+1.96\frac{2}{\sqrt{4}}=1001.96    

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

Solution to the problem

The confidence interval for the mean is given by the following formula:  

\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}   (1)  

Since the Confidence is 0.95 or 95%, the value of \alpha=0.05 and \alpha/2 =0.025, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.025,0,1)".And we see that z_{\alpha/2}=1.96

Now we have everything in order to replace into formula (1):

1000-1.96\frac{2}{\sqrt{4}}=998.04    

1000+1.96\frac{2}{\sqrt{4}}=1001.96    

5 0
2 years ago
Other questions:
  • Rowanda jogged 2.14 kilometers farther then terrance. Select the values that could represent how far each student jogged. Mark a
    11·1 answer
  • heather is training for a long-distance run. her data points listed below represent the days of practice, x, and the number of m
    15·2 answers
  • Select the correct answer. A company that packages cold cuts needs to transport the packaged meat to the supermarket. It will co
    11·2 answers
  • Jillian walked 0.5 miles before she started jogging at an average pace of 5 miles per hour. The equation d = 0.5 + 5t can be use
    7·2 answers
  • Which equations represent a line that passes through the points given in the table? Check all that apply.
    12·2 answers
  • What is the slope of the line represented by the equation y = y equals StartFraction 4 Over 5 EndFraction x minus 3.x – 3?
    13·2 answers
  • The average of 10 numbers is -5. A new number is added to the list making the average -6. What is the new number?
    10·1 answer
  • How can the diagram be used to evaluate Three-halves divided by three-fourths?
    10·2 answers
  • Logistic regression is used when you want to: Answer choices A. Predict a dichotomous variable from continuous or dichotomous va
    8·1 answer
  • 7. John, Paul, and George are having a disagreement over interest rates. John
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!