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
LenKa [72]
3 years ago
10

A circular fence is being placed around a tree. The diameter of the fence is 4 feet. How much fence is used around the tree? Lea

ve your answer in terms of pi.
A 8π ft


B 4π ft


C 2π ft


D.16π ft
Mathematics
1 answer:
Step2247 [10]3 years ago
5 0

Answer:

8π

Step-by-step explanation:

If we are given the diameter of this circular fence, then we can solve for the radius. Just take the diameter of 4 and divide by 2 which is 2.

The circumference of a circle is 2πr²

Just plug in the variables and you get 2π(2)² which is 8π

Hope this helps! :)

You might be interested in
Simplify 175 over 100
Nataly [62]
7over4 is the simplified form
4 0
3 years ago
Read 2 more answers
Can someone help me :/ it’s due today. I’ll give extra points <br><br><br> The bottom one is dab=dcb
mart [117]

Answer:

The answer is A, B, C, D, E

ALL OF THEM ARE CORRECT!!!

Step-by-step explanation:

8 0
3 years ago
What is the reciprocal of 7 1/3? whats the reciprocal?<br>​
Ad libitum [116K]
3/22 but in a decimal 0.1363
5 0
4 years ago
Read 2 more answers
For bowmaian000 please check
garri49 [273]

Answer:

Quadratic function, None of the above, and ?

Step-by-step explanation:

So remember what I told you about earlier, lets look at that first one.

So we can see that x is increasing by 1 and y is decreasing by 3...And then it increases by 3! And after that another 9! Well, that seems like it is reversing, as it changes from decreasing to increasing in y coordinates. So knowing that is reverses from decreasing to increasing in y, <u>it must be a quadratic function</u>!

Next we have a increase in 1 and a decrease by 17...then 12...then 7 in y. This isnt decreasing by a constant amount like a linear function. It doesnt seem like a obvious exponential decrease either, and it isnt reversing like a quadratic function does. I am going to use something called logarthms, which you don't even need to think about yet, just to make sure that it is not an exponent.  Althouhg the difference in the exponent was only 0.0018, it is a differnece.<u> So this must be a none of the above</u>, sicne none of the functions apply. (If this is incorrect, and it is exponential, then the test is wrong. While the method I used is something found in mid algebra 2, it is still a method of finding a exponent of a number.)

Now we finish up with a change in x of 1, and a change of y by...-11, -11, -11!

Well, what do you think this is, thinking back on what I have said so far.

It is a constant change of -11y and 1x. Remember, a CONSTANT CHANGE.

What do you think it is :)

If you cannot figure it out, let me know in comments.

<u>Hope this is helps you!</u>

5 0
3 years ago
A driving school wants to find out which of its two instructors is more effective at preparing students to pass the state’s driv
jonny [76]

Answer:

Yes, there is evidence to support that claim that instructor 1 is more effective than instructor 2

Step-by-step explanation:

We can conduct a hypothesis test for the difference of 2 proportions.  If there is no difference in instructor quality, then the difference in proportions will be zero.  That makes the null hypothesis

H0:  p1 - p2 = 0

The question is asking whether instructor 1 is more effective, so if he is, his proportion will be larger than instructor 2, so the difference would result in a positive number.  This makes the alternate hypothesis

Ha:  p1 - p2 > 0

This is a right tailed test (the > or < sign always point to the critical region like an arrowhead)

We will use a significance level of 95% to conduct our test.  This makes the critical values for our test statistic: z > 1.645.  

If our test statistic falls in this region, we will reject the null hypothesis.

<u>See the attached photo for the hypothesis test and conclusion</u>

7 0
3 years ago
Other questions:
  • The custom shade or purple paint is made by mixing 5 parts blue paint with 3 parts red paint. The employees in the paint departm
    6·1 answer
  • What is 60400239 in word form
    10·2 answers
  • At a certain high school, 40% of the students are boys and 60% are girls. of the girls, 40% take the bus to school and the rest
    7·1 answer
  • Simplify -2(v+5) +5(4v-2)
    15·1 answer
  • Using the cross multiplication method, which of the following is the solution to 21/(x+4) = 7/(x+2)?
    7·2 answers
  • Evaluate 4a for a = 5 . Express your answer in simplest form.<br> 20<br> 22<br> 45<br> 20
    10·2 answers
  • How many doses are contained in 3 grams if each dose is 25mg?
    7·1 answer
  • What is the formula of \underline{force}force​ in physics?<br>​​​
    9·2 answers
  • 5. Candy costs $10.05 for 15 oz. You decide to buy a 25 oz of candy. You pay with a $50 bill.
    7·1 answer
  • Is y= 2x (linear or nonlinear)
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!