When would we need to calculate circumference of a circle? Area of a circle?

Answers

Answer 1
If you know the diameter or radius of a circle, you can work out the circumference. To begin with, remember that pi is an irrational number written with the symbol π. π is roughly equal to 3.14. You can also work out the circumference of a circle if you know its radius.

Related Questions

Femi’s last 5 bowling scores were 68 75 90 and 80 what was femis mean score

Answers

It says last 5 bowling scores but there’s only four numbers listed just fyi

To find the mean, add all the numbers up and then divide by how many numbers you just added.

So, let’s add 68, 75, 90, 80

That equals 313. Now let’s divide by four, since we added four numbers together.

313 divided by four equals 78.25

So out of those four scores you gave me, her average was score 78.25

Hope this helped :)

john has 16 red balls and 12 black balls. what is the ratio ( in simplest form) of red balls to black balls

Answers

4 to 3 because both 16 and 12 can be divided by 4 which is the lowest number they have in common and that brings us to 4 to 3

The simplest form of the ratio of red to black balls is 4:3.

What is a ratio?

The ratio shows how many times one value is contained in another value.

Example:

There are 3 apples and 2 oranges in a basket.

The ratio of apples to oranges is 3:2 or 3/2.

We have,

Number of red balls = 16

Number of black balls = 12

The ratio of red to black balls.

= 16/12

= 4/3

Thus,

The ratio of red to black balls is 4:3.

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Figure LMNO maps to L'M'N'O' by a 125° rotation about point T.

Quadrilateral L M N O is rotated 125 degrees about point T to form quadrilateral L prime M prime N prime O prime.

Which congruency statement is correct?

LMNO ≅ L'M'N'O'
LMNO ≅ O'M'N'L'
ONML ≅ M'O'N'L'
ONML ≅ O'M'N'L'

Answers

Answer:

A= LMNO ≅ L'M'N'O'

Step-by-step explanation:

just did it trust me

A= LMNO ≅ L'M'N'O'. Hope this helps!!

Justin ran 5.5 miles in 49.5 minutes. On average, how many minutes did it
take him to run one mile?

Answers

49.5/ 5.5
= 9 minutes to run one mile

Which transformation represents a reflection over the x-axis?
O (X,Y) - (-x, y)
O(x,y) → (X, -y)
O(x, y) (y,x)
(x, y) - (-y, x)

Answers

reflection over the x-axis is (x,y) - (x,-y)
Second choice!! Every time it says it reflects over the x -axis it is actually affecting the y coordinates. If it reflects over the y-axis, it is affecting the x coordinates.

A figure is reflected across the x-axis to create a new figure. Which rule describes this transformation?
O (x,y) → (-x, -Y)
O (x,y) → (y,x)
O (x, y) = (x, y)
O (x, y) =(x, y)

Answers

Answer:

f(x) reflected across the x-axis is -f(x)

Step-by-step explanation:

so aka

O (x,y) → (x, -y)

Andy's appliance repair charges a certain amount for house calls based on the amount of time that it takes for the repair​

Answers

Answer:

Step-by-step explanation:

I am sorry but please give detailed question

For the following right triangle, find the size length X. Round your answer to the nearest hundredth

Answers

Answer:

The answer would be 10.72

Step-by-step

You already have two side lengths so you use those to find the 3rd length

[tex]A^{2}[/tex]+[tex]B^{2}=C^{2}[/tex]

[tex]A^{2}+9^{2} =14^{2}[/tex]

[tex]A+81=196[/tex]

196-81=115

[tex]\sqrt{115[/tex]

10.72

Fill in the blank.
x 3 x 4 = 84

Answers

Answer:

the missing value is 7

Step-by-step explanation:

10+10 Chloe answer ​

Answers

Answer:

20

Step-by-step explanation:

What value of x makes the equation 0.2(16x – 48) = -0.4(x – 3) true?

Answers

3.2x-9.6=-.4x+1.2
3.2x=-.4x+10.8
3.6x=10.8
X= 3
I believe it’s 3 , I’m not fully sure but from what I calculated I got 3

Mary decides to take out a $4,000 student loan this year. If she will pay 10% interest compounded annually, how much will the total loan amount be in four years when she graduates?

Answers

Answer 4000+1600= 5600

Step-by-step explanation:

The 10% is $400. 400 times 4 is 1600. So to find the total, its 5600. Mark brainliest if this helped you

Which of the following explains the relationship between angles A and D?

Answers

Complementary angle

dennis estimated the width of the space he has in his kitchen to fit a new refrigerator to be 36 inches. the actual width is 33 inches. what is the approximate percent error?

Answers

Answer:

8%

Step-by-step explanation:

Given the following data;

Experimental value = 36 inches

Theoretical value = 33 inches

Percent error can be defined as a measure of the extent to which an experimental value differs from the theoretical value.

Mathematically, it is given by this expression;

[tex] Percent \; error = \frac {experimental \;value - theoretical \; value}{ theoretical \;value} *100[/tex]

Substituting into the equation, we have;

[tex] Percent \; error = \frac {33 - 36}{ 36} *100[/tex]

Note: we would ignore the negative sign.

[tex] Percent \; error = \frac {3}{ 36} *100[/tex]

[tex] Percent \; error = 0.833 *100[/tex]

Percent error = 8.33 ≈ 8%

Tuition for one year at the University of Houston is about $12,300. Azul plans to attend this university and will save money each month for the next 4 years. His parents have saved $4,860 for his first year of tuition. Which plan shows the amount of money Azul will need to save in order to pay for his first year at the University of Houston?

A. Azul will need to save $1,860 per month for the next 4 years.
B. Azul will need to save $155 per month for the next 4 years.
C. Azul will need to save $620 per month for the next 4 years.
D. Azul will need to save $256.25 per month for the next 4 years

Answers

Answer:

It should be C. 620

Step-by-step explanation:

Using proportions, it is found that Azul will need to save $155 per month for the next 4 years, and the correct option is B.

The total price of one year of tuition is $12,300, while his parents have saved $4,860.

Thus, the amount he has to save for the next 4 years is:

[tex]A = 12300 - 4860 = 7440[/tex]

4 years have 48 months, thus, he has to save $7440 in 48 months, which means that the monthly amount is:

[tex]\frac{7440}{48} = 155[/tex]

And the correct option is:

B. Azul will need to save $155 per month for the next 4 years.

A similar problem is given at https://brainly.com/question/24342347

If ∠BAC ≅ ∠DCA, is ABE ≅ CDE? Explain.

A. Yes; the triangles are congruent by AAS.
B. Yes; the triangles are congruent by ASA.
C. Yes; the triangles are congruent by SAS.
D. No; the triangles are not congruent.

Answers

Answer:

The answer is A.

Step-by-step explanation:

It is A because both sides match up except for the last pair, where they are the same. Hope this helped!

I need help !!!!!! Please bZ÷12=9

Answers

Answer:

The answer is b=18/z

Step-by-step explanation:

Let's solve for b.

bz/2=9

Step 1: Divide both sides by z/2.

1/2bz/z/2=9/z/2

b=18/z

Answer:

b=18/z

*PLEASE SOLVE USING EQUATIONS*
How old am I if 200 reduced by 2 times my age is 46?

A) 89
B) 83
C) 77
D) 108 ​

Answers

Answer:

C) 77

Step-by-step explanation:

77 times 2= 154

200-154= 46

NAFTA was important to North America countries because it ________. A. Broke down trade barriers
B. established a military alliance
C. Promoted alternative energy sources
D Provided free healthcare for all people


Please give me the right answer for 33 points.

Answers

Answer:

A. broke down trade barriers

An airplane is traveling with an airspeed of 500 mph in the direction N 60° E. A wind blows directly south at 50 mph. What is the plane’s drift angle?

3.84°
5.21°
60.00°
65.21°

Answers

Answer:

5.21

Step-by-step explanation:

Got it right on edg

Answer:

B) 5.21°

Step-by-step explanation:

got it right on edge :)

ASAP!!! LOOK AT THE IMAGE FOR THE GRAPH AND ANSWER CHOICES!! PLEASE HELP URGENT!!

Answers

Answer:

The answer is D.

4x + y = 2

x - y = 3

____________

When given a graph with an intersection of two lines, first locate the y-intercept (the point where x = 0) of each line, and then find it's slope by evaluating its change in y over the change in x.

It is also possible to eliminate the incorrect systems using substitution when given a point of intersection.

For example, as the point of intersection is apparent on this graph, you can substitute these coordinates from the graph into each of the systems of equations given in the choice answers to verify it.

For it to be a solution, it must satisfy (make true) both equations of the system.

(a, b) : (x, y)

Given that (1,-2) is our point of intersection according to the graph.

Choice A is incorrect because (1, -2) → x + 4y = 3 → (1) + 4(-2) = 3 → 1 + (-8) = 3 →

1 - 8 = 3 → -7 ≠ 3.

And (1, -2) → x + y = 2 → (1) + (-2) = 2 →

-1 ≠ 2.

It is already incorrect as one of the

equations in this system do not satisfy the coordinate.

Choice B is also incorrect because

(1, -2) → x + 4y = 2 → (1) + 4(-2) = 2 →

(1) + (-8) = 2 → 1 - 8 = 2 → -7 ≠ 2.

And (1, -2) → x + y = 3 → (1) + (-2) = 3 →

1 - 2 = 3 → -1 ≠ 3.

Lastly, Choice C is incorrect because

(1, -2) → 4x + y = 3 → 4(1) + (-2) = 3 →

4 + (-2) = 4 - 2 = 3 → 2 ≠ 3.

And (1, -2) → x - y = 2 → (1) - (-2) = 2 →

1 + 2 = 2 → 3 ≠ 2.

Therefore D is correct because it is the last answer remaining.

Also here is proof:

(1, -2) → 4x + y = 2 → 4(1) + (-2) = 2 →

4 + (-2) = 2 → 4 - 2 = 2 → 2 = 2

So one equation fits the coordinate, but this cannot yet be verified as the working system unless both equations fit the point.

So (1, -2) → x - y = 3 → (1) - (-2) = 3 →

1 + 2 = 3 → 3 = 3

Now we can say that this is the working system.

_____________________________

The next method involves strong observation of the graph to find both equations in slope-intercept form and then back into standard form to find a match of the choice answers as both systems are in standard form (Ax + By = C)

With the first line, it has a y-intercept of 2 because this is where it crosses the y-axis when x = 0. It also has a slope of -4 because it goes down 4 units every 1 unit to the right. This means that the first line has an equation of y = - 4x + 2.

Slope intercept form is the form y = mx + b where m is the slope( rise over run/change in y over change in x) , and b is the y-intercept (where x = 0).

The next line has a y-intercept of -3 because this is where it crosses the axis, and where x = 0. This also has a slope of 1 because it rises by 1 every run or goes up 1 unit every 1 unit to the right. therefore the second line has an equation of y = x - 3.

A relation is

1)the output(y) vaules of the relation
2) the input (x) vaules of the relation
3)a set of points that pair input vaules with output vaules
4)x and y vaules written in the form (x,y)

WILL MARK BRAINLEST​

Answers

Answer:

its 2

Step-by-step explanation:

can i get brainliest

evaluate each expression if m equals 3 and n equals 7, 3mn is?​

Answers

Answer:

63

Step-by-step explanation:3(3)(7)=63

Answer: 3 x 3 x 7 = 63

Step-by-step explanation: I am not sure if this is what you are asking but when a number and a variable and next to each other without any spaces it means that you should multiply them, so, 3 x m is just 3 x 3. Expanding on this, if 3 x 3 x n is equal to 3 x 3 x 7 then you can just multiply 3, 3, and 7 for a total of 63.

A restaurant makes it barbecue sauce by the gallon but they sell in 12 ounce bottles this week 3 gallons of barbecue sauce are ready to bottle how many fluid ounces of sauce is there

Answers

Answer:

3 gallons = 12 ounces

12 x 3 = 36 ounces

PLSSSSS HURRY I AM TIMED. Dino has 14 coins and 2 one-dollar bills. Which describes the relationship between the coins and the dollar bills?
Dino has 7 times as many coins as he has bills.
Dino has 7 times as many bills as he has coins.
For every 2 bills, Dino has 7 coins.
For every 7 coins, Dino has 14 bills.

Answers

Answer:

I believe it's A

Step-by-step explanation:

(^-^) Hope this helps!

Answer:

For every 2 bills, Dino has 7 coins.

Step-by-step explanation:

23.21 to the nearest hundredth​

Answers

Answer:

23.21

Step-by-step explanation:

The answer you have given is correct.

What is the 100th term in the sequence an= 4n-12

Answers

388 is the answer to this equation

The hundredth term of the given sequence is 388.

What is a sequence?

In mathematics, a sequence is an enumerated collection of objects in which repetitions are allowed and order matters.

Given that, we need to find the 100th term in the sequence an= 4n-12,

Put n = 100,

a₁₀₀ = 4 x 100 - 12

= 400 -12

= 388

Hence the hundredth term of the given sequence is 388.

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How many terms are in -6p + 4 - 32q + (-3r) - 62

Answers

2 terms bc the other numbers have variables with them

Two fifth graders solved 2000 divided by 40. Carter said the answer is 50, while Kim said the answer is 500. Who has the correct answer? Explain your thinking.​

Answers

Answer:

Carter is correct. 2000/40=50.

Step-by-step explanation:

The correct answer for who has the correct answer is Carter.

Given question:

[tex]\dfrac{2000}{40}[/tex]

Carter answer:

[tex]\dfrac{2000}{40} = 50[/tex]

Kim answer:

[tex]\dfrac{2000}{40} = 500[/tex]

The correct division:

[tex]\dfrac{2000}{40} = 50[/tex]

Carter's reasoning is accurate because he correctly divided 2000 by 40 to find the answer. Kim's answer of 500 seems to be a mistake, possibly due to an error in the division process or a misunderstanding of the problem.

Carter has the correct answer.

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find what percent of 570 is 190​

Answers

Formula Used:

Percentage = (Smaller Value / Actual Value)*100

Finding the percentage:

Percentage = (190/570) * 100

Percentage = (0.333) * 100

Percentage = 33.3%

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