Here is a circle.
The diameter of the circle is 9 cm.
Work out the circumference of this circle.
Give your answer correct to 3 significant figures.
12.11%2S:

Answers

Answer 1
Radius is half d so r us 4.5
Formula is 2x pi x r
So 28.3 to 3 s.f.

Related Questions


Please help me with this. Thank you!

Answers

Answer:

Triangle= 24x

Rectangle= 8x+7

Step-by-step explanation:

10x+8x+6x=24x

7x+4+x+3=8x+7

Combine Like Terms

An infinite number of ratios are equivalent to 3:8. How
can that be possible, when the multiplication table only
goes to 9?

Answers

Answer:

See below, please!

Step-by-step explanation:

There are infinite number of ratios equivalent to 3:8 because both numbers can be multiplied by a common number or divided by a common number.

For example, 9:24 would still be equivalent to 3:8 because the common number in our case is 3. See what I mean?

Hope this helped!

2x plus 3 plus x2; for x = 4

Answers

Answer:

2x+3+x2 if x=4 is 27

Step-by-step explanation:

2*x or 2*4=8

8+3=11;

and x or 4 times itself is 16

so we add it all together and get 27.

Have a great day!

Answer:

27

Step-by-step explanation:

Not sure if you mean x to the power of 2, so I'll assume that.

Replacing the variable for 4 should look like:

2(4) + 3 + 4^2

8 + 3 + 16 (4 to the power of 2 is equivalent to 4 x 4 which is 16)

Now add them all, 27.

Graph x<29 on a number line

Answers

Answer:

plot it 2 higher ticks then the zero. hope this helps

Step-by-step explanation:

it should look like this

The classroom rug is 9 feet long and has an area of 72 square feet. What is the perimeter of the rug?

Answers

Answer:

34 Ft.²

Explanation:

Area = width · length

The length of the rug is 9 feet. We need to find the width.

72 ÷ 9 = 8

Check to see if this is correct: width (8) · length (9) = area (72)

Now add the length and width together two times since a rug has 4 sides

8 + 8 + 9 + 9 = 34

The perimeter of the rug is 34 ft.²

Mike took a taxi from his home to the airport. The taxi driver charged an initial fee of $6 plus $3 per mile. The total fare was $24, not including the tip. How many miles did Mike travel by taxi on his ride?

Answers

He traveled 6 miles by taxi on his ride

I need this quick pls.​

Answers

Answer:

8/3

Step-by-step explanation:

Slope is rise/run. The rise here is 8. The run is 3. The line rises left to right so the slope is positive.

Hope it helps!

solve by elimination
{10x-4y=-6
{-3x+4y=-1
WORK MUST BE SHOWN

Answers

Answer:

x = -1

y = -1

Step-by-step explanation:

10x - 4y =  -6  ---------------------(I)

-3x + 4y =  -1 ---------------------(II)

Add equation (I) & (II) and y will be eliminated.

10x  - 4y = - 6

-3x  + 4y = -1       {Add}

7x           = - 7

         x = -7/7

x = -1

Plugin x =-1 in equation (I)

10*(-1) - 4y = -6

-10 - 4y = -6 {Add 10 to both sides}

     -4y = -6 + 10

     -4y = 4  {Divide both sides by (-4)}

         y = 4/(-4)

y = -1

What operation does 6y represent?

Multiplication


Subtraction


Addition


Division

Answers

Answer:

multiplication

Step-by-step explanation:

whenever a number and a variable are together it means they are being multiplied together

Answer:

6y represents Multiplication.

Find the distance between the two points in simplest radical form.
(0,8) and (4,0)

Answers

decimal : 8.94
exact form 4 sqare root 5

HELP ME PLEASE! I need this !

Answers

Answer:

Step-by-step explanation:

[tex](3x+7)8x^2\\ \\ 3x(8x^2)+7(8x^2)\\ \\ 24x^3+56x^2[/tex]

K/4 < -4
What could k be???

Answers

Answer:

-17

Step-by-step explanation:

-17/4 = -4.25

and 4 is greater than that, so i think

K = -17

The quotient of x miles and 8 hours
is 55 miles per hour.

Answers

X is equal to 440
440/8=55

Can someone help me fast

Answers

The answer should be A

10. If log10x = 1 + a and log10y = 1 – a, show that xy = 100.
How?

Answers

Step-by-step explanation:

log x = 1 + a

a = log x - 1

log y = 1 - a

a = 1 - log y

So

log x - 1 = 1 - log y

log x + log y = 2

log (xy) = 2

xy = 100

what is 900 * 158000​

Answers

Answer:

142,200,000

Step-by-step explanation:

Used Calculator

Answer:

142200000

Step-by-step explanation:

It's a really long answer


A rectangular honeycomb measures 35.1 cm by 32.4 cm. Approximately how many cells does it contain?​

Answers

Answer:

1,137.24

Step-by-step explanation:

Every worksheet is made up of thousands of rectangles, which are called cells. A cell is the intersection of a row and a column—in other words, where a row and column meet. Columns are identified by letters (A, B, C), while rows are identified by numbers (1, 2, 3).

So all you do is multiply like if you were finding the area:

35.1 x 32.4 = 1137.24.

4 less than a number equals 12.​

Answers

Answer:

16 brainliest?

Step-by-step explanation:

Express each ratio as a fraction in simplest form. 3 pints to 4 quarts.

Answers

Answer:

3/4

Step-by-step explanation:

that's as simple as it gets

3/4 you there are web site, with conversations

Jeffrey has an aquarium in the shape of a rectangular prism. He is going to place a layer of sand over the base for his iguana. The area of the base of the aquarium can be represented by the expression (42x3−14x2+21x) feet3. If the width of the aquarium is represented by the expression (7x) feet, what is the length of the aquarium?

Answers

Answer:

[tex]Length = 6x^2 - 2x + 3[/tex]

Step-by-step explanation:

Given

[tex]Area = 42x^3 - 14x^2 + 21x[/tex]

[tex]Width = 7x[/tex]

Required

Determine the length of the aquarium

The area of a rectangular base is calculated as:

[tex]Area = Length * Width[/tex]

Substitute values for Area and Width

[tex]42x^3 - 14x^2 + 21x = Length * 7x[/tex]

Make Length the subject

[tex]Length = \frac{42x^3 - 14x^2 + 21x}{7x}[/tex]

Factorize the numerator

[tex]Length = \frac{7x(6x^2 - 2x + 3)}{7x}[/tex]

[tex]Length = 6x^2 - 2x + 3[/tex]

Choose the correct classification of 3x^2 + 2.

A) cubic binomial
B) quartic trinomial
C) quadratic binomial
D) quintic polynomial​

Answers

Answer:

The answer is C. Quadratic Binomial

Can somebody help me Graph y=-3/2X-3???

Answers

Step-by-step explanation:

try desmos its a life saver

-15 - 4x = -11
help please?​

Answers

Answer:

if ur solving for x the answer is x=-1

Step-by-step explanation:

-15 - 4x = -11

=> -4x = -11 + 15

=> -4x = 4

[tex] = > x = \frac{4}{ - 4} [/tex]

=> x = -1 (Ans)

In the real world describe 2 objects that are similar

Answers

Answer:

How much money people make and how much we waste/spend

Step-by-step explanation:

Answer

pad and phones?

Step-by-step explanation:

Find the difference
(4y+3)-(y-2)
need it quick

Answers

Answer: 3y+5

Step-by-step explanation: 4y+3−(y−2)

4y+3+−1(y−2)

4y+3+−1y+(−1)(−2)

4y+3+−y+2

(4y+−y)+(3+2)

3y+5

The table shows the linear relationship between x, the altitude in feet, and y, the boiling point of water in degrees Fahrenheit. What are the slope and y- intercept of the line that models this situation?
A. Slope=- 0.0018, y-intercept = 212
B. Slope= 0.0018, y-intercept =-212
C. Slope =212, y- intercept= 0.0018
D. Slope=-212, y-intercept = 0.0018

Answers

Answer:B

Step-by-step explanation

The slope of the linear relation is -0.0018 and the y-intercept will be 212. The correct option is B.

What is an equation of the line?

An equation of the line is defined as a linear equation having a degree of one. The equation of the line contains two variables x and y. And the third parameter is the slope of the line which represents the elevation of the line.

The general form of the equation of the line:-

y = mx + c

m = slope

c = y-intercept

Slope = ( y₂ - y₁ ) / ( x₂ - x₁ )

Given data in the table is,

Altitude(x)       Boiling point (y)

0                      212.0

500                 211.1

The slope will be calculated as,

Slope = ( y₂ - y₁ ) / ( x₂ - x₁ )

Slope = ( 211.1 - 212  ) / (500 - 0 )

Slope = -0.0018

The y-intercept will be calculated as,

y = mx + c

212 = 0 + c

c = 212

Therefore, the slope of the linear relation is -0.0018 and the y-intercept will be 212. The correct option is B.

To know more about an equation of the line follow

https://brainly.com/question/18831322

#SPJ2

During the months of August and September the total rainfall I August was 0.6 inch more than the amount f rainfall in September, how much rain fell in each month?

Answers

Answer:

August = 3.4

September = 2.8

Step-by-step explanation:

Given

[tex]Total = 6.2\ in[/tex]

Represent August with A and September with S.

So,

[tex]A =S + 0.6[/tex]

Required

Amount of rainfall in each month.

This is calculated using:

[tex]Total = August + September[/tex]

[tex]6.2= A + S[/tex]

Recall that: A = S + 0.6. Substitute

[tex]6.2= S + 0.6 + S[/tex]

[tex]6.2= 2S + 0.6[/tex]

Collect Like Terms

[tex]2S = 6.2 - 0.6[/tex]

[tex]2S =5.6[/tex]

Solve for S

[tex]S = 5.6/2[/tex]

[tex]S = 2.8[/tex]

Substitute 2.8 for S in [tex]A =S + 0.6[/tex]

[tex]A = 2.8 + 0.6[/tex]

[tex]A = 3.4[/tex]

Ann borrowed $3000 from a lender that charged simple interest at an annual rate of 7% When Ann paid off the loan, she paid $420 in interest. How long was the loan for, in years?

Answers

Answer:

it was a 2 year loan with $210 contributed each year

Step-by-step explanation:

you take 7 percent of 300 which is 210 and see how many times it goes into the total interest amount and then your answer is how many years the loan was for

What is the answer for 6(5x-3)

Answers

The answer is 35x-18 because you need to multiply the 6 out to the other 2 numbers

12
A model maker wants to make a model of a
ship
He will use a scale of 1:50
The ship was 100ft long
1 foot = 0.3 m
How long will the ship be in cm?

Answers

9514 1404 393

Answer:

  60 cm

Step-by-step explanation:

The model ship will be x feet long, where ...

  x/100 = 1/50

  x = 100/50 = 2

In meters, that is ...

  2(0.3 m) = 0.6 m

A meter is 100 cm, so the length in centimeters is ...

  (0.6)(100 cm) = 60 cm

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