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
balu736 [363]
3 years ago
5

If the circumference equals 40 pi inches, what is the radius?

Mathematics
1 answer:
Taya2010 [7]3 years ago
4 0

Circumference = 2πr

40π = 2πr

r = 20 in

You might be interested in
Write an equation of the line that is parallel to -x + y = 5 and passes through the point (2,-5).
trasher [3.6K]

Remember that the slope intercept formula is:

y = mx + b

m is the slope

b is the y-intercept

so convert the equation -x + y = 5 into slope intercept form by adding x to both sides

(-x + x) + y = 5 + x

0 + y = 5 + x

y = 5 + x

To match the slope intercept formula switch the x and 5 around

y = x + 5

If lines are parallel then they have the same slope (m) but they have different b

This means that the slope of the line will be 1 (in front of the x is an invisible 1 which would be m)

This is what we have so far...

y =  x + b

Now we must find b

To do that you must plug in the point the line goes through in the x and y of the equation.

(2, -5)

-5 = 1(2) + b

-5 = 2 + b

-7 = b

y = x + (-7)

y = x - 7

Hope this helped!

~Just a girl in love with Shawn Mendes

7 0
3 years ago
Read 2 more answers
Anybody know the right answer?
Murljashka [212]
Y = -1 is a horizontal line going through "-1" on the y axis

Note that the point (1,2) is exactly 3 units of distance above the line y = -1

When we reflect across this line, the point (1,2) will just move straight down to exactly 3 units of space below the line y = -1.  Since we are not shifting left or right, the x coordinate of our original point will not change.  The y coordinate of our original point will now need to be reduced by 6(3 units down to get to the line of reflection and then 3 more down to get to the image location)   

The coordinates of the image point will be (1, -4)
Now we need to do the same process with (1, -4) being reflected across y=1

Note (1,-4) is 5 units of distance below the line y = 1 , so we need to reflect the point upward so that the image point is located exactly 5 units of distance above the line y = 1  Again, the x coordinate does not change, and our final image coordinates are (1, 6)

I guess more simply stated, if you're just looking for the number in the green box it would be " 1 " .. Reflecting points across horizontal lines only result in changes of the "y" coordinate since there is no shift left or right.
5 0
3 years ago
15 feet to 33 feet percent of change
Usimov [2.4K]
The answer is 220%. Here is a picture of my work.

4 0
3 years ago
Is the square of a complex number always a real number? Explain how, please I would like to finish this tonight.
Artemon [7]

Answer:

<em>The absolute square of a complex number is calculated by multiplying it by its complex conjugate. This give the magnitude squared of the complex number. The absolute square is </em><em>A</em><em>l</em><em>w</em><em>a</em><em>y</em><em>s</em><em> </em><em>R</em><em>e</em><em>a</em><em>l</em><em>. We will use complex exponentials all the time.</em>

7 0
2 years ago
Read 2 more answers
Need help with formula. Population of people is 5.3 per square mile and is 39 thousand square mile in size. What is the populati
VladimirAG [237]

Answer:

P = 5.3x = 206,700

Step-by-step explanation:

P = population

P = 5.3x, where x is the square miles

p = 5.3(39000) = 206,700

5 0
3 years ago
Other questions:
  • What is radius and how do I solve it
    12·2 answers
  • HELP please!!!! I WILL GIVE BRAINLY
    9·2 answers
  • 6/12 + 1/3 with steps?
    6·2 answers
  • least to greatest numbers one, negative 2.5, 0.75, three common negative 0.75 can you help me put them least to greatest
    5·1 answer
  • The average weekly pay for a records clerk is $800. If the clerk works 40 hours in one week, what is his or her hourly pay?
    15·2 answers
  • The ratio of the volume of two spherical steels balls is 27:64. what is the ratio of their diameters
    12·1 answer
  • Please help! Greatly appreciated
    13·2 answers
  • What value of x makes this equation true?<br><br> 5x+3=2x-3
    13·2 answers
  • Amelia invests money in an account paying simple interest. She invests $100 and no money is added or removed from the investment
    14·2 answers
  • PLS HELP WILL GET BRAINLIEST
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!