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
AnnZ [28]
3 years ago
12

The formula for the circumference C of a circle, in terms of the radius, is C = 2TTr, where r stands for the radius. Rearrange t

he quantities in this formula to give a new formula for the radius of a circle in terms of the circumference.
Mathematics
1 answer:
asambeis [7]3 years ago
8 0
r = (C / π) / 2

Actually the formula of the circumference is Pi multiplied to diameter; where the diameter is equal to twice the radius.

C = π d
d = 2 r
C = π * 2r

If we need to find the radius from the Circumference then

r =  (C / π) / 2

You must differentiate Pi from the number 2 because 2 is part of the radius. This is also to avoid confusion.

For example:  r = 5 ; π - 3.14; find the circumference

C = π * 2r
C = 3.14 * (2*5)
C = 3.14 * 10
C = 31.40

If the circumference is given and the radius is missing, then,

r = (C/π) / 2
r = (31.4 / 3.14) / 2
r = 10 / 2
r = 5
You might be interested in
Find the LCD for each set of rational expressions.
ad-work [718]
The answer is 377.2
6 0
3 years ago
The selling price of an apartment dropped from 250,000 to 225,000. By What percent did the price drop?
ch4aika [34]

Answer:

10%

Step-by-step explanation:

The percentage decrease in price = \frac{decrease amount}{original amount} x 100%

Original amount = 250,000

New amount = 225,000

Decrease in amount = 250,000 - 225,000

                        = 25,000

So that;

Percentage decrease in price = \frac{25000}{250000} x 100%

                                           = 0.1 x 100%

Percentage decrease in price = 10%

The price of the apartment dropped by 10% of its original price.

5 0
3 years ago
How can u find the slope of a equation
Tomtit [17]

Answer:

It is the rate of change (how far it goes up or how far it goes down)

Step-by-step explanation:

The slope of a line is a measure of how fast it is changing. This can be for a straight line -- where the slope tells you exactly how far up (positive slope) or down (negative slope) a line goes while it goes how far across. Slope can also be used for a line tangent to a curve. Or, it can be for a curved line when doing Calculus, where slope is also known as the "derivative" of a function. Either way, think of slope simply as the "rate of change" of a graph

Example: if you have a slope of 2 your equation would be y=2x+1

You would always do rise over run. rise over run means when you put your slope in a fraction the numerator would always go up or down and the denominator would be run and run means you would go left or right. it all depends on if it is positive or negative.

Hope this helps good luck @(^_^)@

7 0
3 years ago
Solve by using Elimination.
Alexxx [7]
<h3>Answer:</h3>

It is (3, -1)

<em>Hope this helped :)</em>

6 0
3 years ago
Solve. 5(x-3)+11=4(x+2)
Alinara [238K]

Answer:

12

Step-by-step explanation:

5(x - 3) + 11 = 4(x + 2) \\or \:  5x - 15 + 11 = 4x + 8 \\ or \: x = 12

7 0
4 years ago
Other questions:
  • For a trapezoid, the following formula relates the area A, the two bases a and b, and the height h.
    8·2 answers
  • The three solutions of the equation f(x) = 0 are -2, 0, and 3. Therefore, the three solutions of the equation f(x - 2) = 0 are
    8·2 answers
  • I need help setting the equation up??
    13·1 answer
  • while chasing its prey,a cheetah is running slowly and then increases its speed by 42.5 miles an hour to reach a top speed of 70
    8·1 answer
  • What is the answer 4d+12e=
    7·1 answer
  • Compared to last year, the population of Boom Town has increased 25%. The
    5·1 answer
  • B divided by 8 equals 21
    8·2 answers
  • Which statement is true about the following pair of rectangles?
    14·1 answer
  • Ray is making his reward winning lemonade recipe for a party he is comparison shopping for lemons at super pioneer supermarket h
    5·1 answer
  • 2 4/5 x 1/3 = <br> 1 1/4 x 1/5 =
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!