In your own words, explain why C=2πr, where C is the circumference of a circle of radius r. Include a description of the number π in your explanation.

I really need help with this one pls help thank you :D

Answers

Answer 1

Answer:

Pi—which is written as the Greek letter for p, or π—is the ratio of the circumference of any circle to the diameter of that circle. Regardless of the circle's size, this ratio will always equal pi(3.1415).

There are two radii in one diameter. The formula for circumference is pi*d when using diameter which explains the two in front of the formula given by your teacher.

Step-by-step explanation:


Related Questions

what is 3.5 x 10 to the 4th power in standard notation? (decimal)

Answers

Answer:

35000 would be your answer

Step-by-step explanation:

The answer is just 35 dude at the top correct

72 mi
21 mi
What is the length of the hypotenuse?

Answers

Answer:

75 mi

Step-by-step explanation:

c squared = a squared + b squared

c squared = 72 squared + 21 squared

c squared = 5184+441

c squared = 5625

c = root 5625

c = 75 mi

Write an equation that you can use to find the value of x. Perimeter of triangle: 16 in ANSWER 3x

Answers

Answer:

16 x 3? I'm not sure I understand sorry.

16 x 3 shall be it. Hopes this helps

solve , (7*7) +(8*8). ASAP. please​

Answers

Answer:

[tex](7 \times 7) + (8 \times 8) \\ = {7}^{2} + {8}^{2} \\ = 49 + 64 \\ = 113[/tex]

Step-by-step explanation:

hope it is helpful to you

50 POINTS PLZ HELP NO LINKS This renewable energy project promises to provide numerous benefits to our state. These include an increase in jobs and a secure and sustainable source of energy. This project will make dollars and make sense for all of us. What effect is the underlined phrase meant to have on the argument?

1 It intends to show how important jobs in renewable energy will become.

2 It emphasizes humor to help make the subject more interesting to readers.

3 The pun on sense helps call attention to the economic soundness of the project.​

Answers

Answer: 3 The pun on sense helps call attention to the economic soundness of the project.​

Step-by-step explanation:

The underlined phrase is the last statement and it is a pun that is meant to show that the plan is a good one because it will both increase jobs and is good for the environment which means that it is sound from both an economic and an environmental perspective.

In using the pun, the entire argument for the project was summarized to show the basic benefits of the plan and show how it would benefit the people.

If you had a triangle with side lengths of 4 and a scale factor of 3, what would be the new side lengths of the triangle?

Answers

Answer:

1.3

Step-by-step explanation:

new side lengths = original length / scale factor

4/3 = 1.3

The perimeter of a square is 100. The side length is represented by 2x+3. Solve for x.

Answers

Answer:

4×side length=perimeter of the square

4×(2x+3) = 100

2x+3 = 25

2x=25-3=22

x=11

39. If one student can complete the decorations for the prom in 5 days
working alone, another student could do it in 3 days, and a third could
do it in 4 days, how long would it take them working together?

Answers

Answer:

1.3 days

Step-by-step explanation:

1/5+1/4+1/3

12/60+20/60+15/60= 47/60

60/47

=1.3

what operation do you use to convert from a larger measurement unit to a smaller measurement unit? Explain why

Answers

Answer:

Use multiplication and dividing.

Step-by-step explanation:

If you want to convert to a smaller unit, you must multiply.

For example...

4 Feet to Inches:

[tex]4 * 12 =48[/tex] inches

2 Yards to Inches:

[tex]2 * 3 = 6[/tex] feet

[tex]6 * 12 = 72[/tex] inches

If you want to convert to a larger unit, you must divide.

336 Inches to Feet:

[tex]336/12=28[/tex] feet

756 Inches to Yards:

[tex]756/12=63[/tex] feet

[tex]63/3=21[/tex] yards


You observe the heights of two plants for an experiment. Plant A has a height of 8 centimeters and grows 1 centimeter each week. Plant B has
a height of 4 centimeters and grows 2 centimeters each week. Let x represent the number of weeks and let y represent the height of the
plant
a. Write a system of linear equations that represents this situation
System of equations:
b. Will the plants ever have the same height?

Answers

Using linear functions, it is found that:

a)

[tex]y_A(x) = 8 + x[/tex]

[tex]y_B(x) = 4 + 2x[/tex]

b) They will have the same height after 4 weeks.

A linear function has the following format:

[tex]y = mx + b[/tex]

In which:

m is the slope, which is the rate of change.b is the y-intercept, which is the value of y when x = 0.

Item a:

Plant A has a height of 8 centimeters and grows 1 centimeter each week, hence:

[tex]y_A(x) = 8 + x[/tex]

Plant B has  a height of 4 centimeters and grows 2 centimeters each week, hence:

[tex]y_B(x) = 4 + 2x[/tex]

The system is:

[tex]y_A(x) = 8 + x[/tex]

[tex]y_B(x) = 4 + 2x[/tex]

Item b:

Equaling the equations:

[tex]y_A(x) = y_B(x)[/tex]

[tex]8 + x = 4 + 2x[/tex]

[tex]x = 4[/tex]

They will have the same height after 4 weeks.

To learn more about linear functions, you can take a look at https://brainly.com/question/16302622

0.0042 × 0.03
2222222÷45553926549

Answers

Answer:

0

Step-by-step explanation:

I need help plsssssssssss

Answers

Answer:

Diagram B

Step-by-step explanation:

Most of the points don't line up with the line itself.

A ladder leaning against a wall makes an angle of 75° with the ground. If the foot of the ladder is 6 feet from the base of the wall, what is the length of the ladder?

Answers

Answer:

the length of the latter would be 23 feet because we know one angle is 75 and the angle against the wall is 90 and the base is 6 feet answer is 23 feet

Step-by-step explanation:

To solve this problem, we make use of the geometry that forms between the wall, the floor and the ladder. A rectangular triangle is formed due to the right angle on the wall

Make sure to see the picture

Answer:

zcvdbvngffnn

Step-by-step explanation:

2. It takes 1 3/8 minutes to wrap a parcel and 1/2 minute to address it. How many minutes does it take to:

(a) wrap and address one parcel? Give your answer as a fraction

(b) wrap and address a dozen similar parcels?

Answers

Answer:

45/2

Step-by-step explanation:

U first have to change the mixed number to improper fraction and find the least common multiple

Help me with this please

Answers

Answer:

1. 5

2. 8

Step-by-step explanation:

number one is 5 and number 2 is 8

The price of Maryam’s grocery bill was reduced from $80 to $60. By what percentage was her grocery bill reduced?

Answers

Answer:

25%

Step-by-step explanation:

have a good day! :)

correct awnser gets brainliest no links!!!!
Is the following relation a function?
{(8,9), (9,8), (7,8), (-7, 9), (6, 4)]}

Answers

Answer:

no

Step-by-step explanation:

can only have one output

HELP I WILL GIVE BRAINIEST

Answers

Answer:

13.7

Step-by-step explanation:

It forms a triangle.

They are trying to find the height, cause they say the east-bound car went east so that makes the bottom of the triangle, the width. They also give is the distance in between both cars so that's the hypotenuse so let's set up the equation...

15² - 6² = 189

now we square root it

√189 = 13.7

 

Drop your favorite American Horror Story character for 5 easy points​

Answers

Answer:

the clown plz mark brainliest

Answer:

TATE AND BROOKE THOMPSON or any of emma roberts characters

5. A ball is thrown into the air from the edge of a 48-foot-high cliff so that it eventually lands
on the ground. The graph below shows the height, y, of the ball from the ground after x
seconds

For which interval is the ball's height always decreasing?
A. 0 B. 0 C. 2.5 D.) 2

Answers

There is no graph picture here sorry


please help me i don’t understand

Answers

Answer:

Below

Step-by-step explanation:

All you need to do to find angle x is to subtract 48 from 90 :)

So, 90 - 48 = 42

Angle x = 42 degrees

Hope this helps!

Answer:

anglePQR+anglePQS=90

or,48 degree+x=90

or,x=90-48

or,x=42

therefore the value of x is 42 degree

Step-by-step explanation:

Which expression means "multiply 3 by the sum of m and p"?

Answers

Answer: A

Step-by-step explanation:

The sum of m and p --> (m + p)

(Because sum means addition)

Multiply 3 by --> × 3

--

Combined that would be either:

3 × (m + p)

or

(m + p) × 3 --> which is option A

Have a good day :)

option A.(m+p)×3

is the correct answer

hope it helps you have a good day

please mark me as brain list

what's the answer ?

[tex] \sqrt{450 \div 2} [/tex]

Answers

Answer:

15.

Step-by-step explanation:

450 / 2 = 225.

225= 3 * 3 * 5 * 5

So √225 = 3 * 5 = 15.

[tex]\huge{ \mathbf{  \underline{ Answer} \:  \:  ✓ }}[/tex]

Let's solve :

[tex] \sqrt{ \dfrac{450}{2} } [/tex]

[tex] \sqrt{225} [/tex]

[tex]15[/tex]

_____________________________

[tex]\mathrm{ ☠ \: TeeNForeveR \:☠ }[/tex]

please answer, the best answer gets brainliest

Answers

Median - 11
Mean - 36
The mean is 36 and the median is 40

The dot plots show the numbers of miles Nicole rode on her bicycle on several days in two
different months.
March
April
X
>
10
10
Number of Miles Biked Each Day
Number of Mies Biked Each Day
Which statement is best supported by the information?
A. The distribution of the data is approximately symmetrical for both sets of data
B. The mean of the number of miles Nicole rode each day in April is greater than the mean of
the number of miles Nicole rode each day in March
C. The range of the number of miles Nicole rode each day in March is equal to the range of the
number of miles Nicole rode each day in April
D. The median of the number of miles Nicole rode each day in March is less than the median
of the number of miles Nicole rode each day in April
No

Answers

is C also study ur media median and range

The pool at a resort needs a fence added around its lounge area for safety. The pool measures 20 feet by 40 feet and the lounge area is 10 feet on each side of the pool. How much fence is needed to go around all four sides of the lounge area?

Answers

Answer:

The amount of fence needed to surround the mentioned space is:

200 feet.

Step-by-step explanation:

To identify the amount of fence, you must take all the measurements given in the exercise:

Pool width = 20 ftPool length = 40 ftAditional area in each side = 10 ft

As each side has 10 additional feet, that is the lounge area, you must add 20 feet to each side of the pool, this is because, in the case of the width, you must add 10 feet to the right side and 10 feet to the left side, in the case of the length, you must add to each side 10 feet to the upper part and 10 feet to the lower part, in this form, the measurements of the fence must be:

Width of fenced area = 40 ftLength of fenced area = 60 ft

As you know, the length has two sides and the length has two sides too, by this reason, we must multiply each value by 2 to obtain the amount of fence  to all four sides of the lounge area:

Amount of fence = 2(40 ft) + 2(60 ft)Amount of fence = 80 ft + 120 ftAmount of fence = 200 ft

As you can see, the amount of fence needed to go around the lounge area is 200 feet.

A swimming pool that is 10 feet, 20 feet long, and 4 1/2 feet deep. how much water can this swimming pool hold (to the top of the pool)?

Answers

Answer:

900 cubic feet

Step-by-step explanation:

Volume = length x width x height

= 10 x 20 x 4.5

= 900

To frame two problems of linear equation in one variable of your choice and solve such that the result of the first problem should be 79 and the next problem is 25.

Answers

Answer:

[tex]x + y = 79[/tex] and

[tex]x - y = 25[/tex]

[tex](x,y) = (52,27)[/tex]

Step-by-step explanation:

Let the variables be: x and y

The equations can be modelled as:

[tex]x + y = 79[/tex] and

[tex]x - y = 25[/tex]

To solve for x and y, we have:

Make x the subject in [tex]x - y = 25[/tex]

[tex]x = 25 + y[/tex]

Substitute [tex]x = 25 + y[/tex] in [tex]x + y = 79[/tex]

[tex]25 + y + y = 79[/tex]

[tex]25 + 2y = 79[/tex]

Collect like terms

[tex]2y = 79 - 25[/tex]

[tex]2y = 54[/tex]

Divide both sides by 2

[tex]y = 27[/tex]

Substitute [tex]y = 27[/tex] in [tex]x = 25 + y[/tex]

[tex]x = 25 + 27[/tex]

[tex]x = 52[/tex]

So, we have:

[tex](x,y) = (52,27)[/tex]

Karen and Kristen were in a competition to see who could walk the
farthest in a week. The expression 3x - 4 represents the total number of
miles Karen walked in x days. The expression 2x + 3 represents the total
number of miles Kristen walked in x days. Who walked the farthest if they
each walked for 7 days? Explain.

Answers

Answer:

They each walked the same amount if you plug 7 into each of their expressions

Step-by-step explanation:

Karen walked 3(7) - 4 or 17 miles

Kristen walked 2(7) + 3 or 17 miles

What is the distance between-2 and 2 on the number line shown below -

Answers

Answer:

3

Step-by-step explanation:

on less you have a picter i cant help that much

Answer: The distance is 4

Step-by-step explanation:

-(-4)-(-3)-(-2)-(-1)-0-(1)-(2)-(3)-(4)-

               ^  1   2  3  4 ^

                    ~   ~  ~  ~

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