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
DiKsa [7]
2 years ago
5

The area of a circle is 9π m². What is the circumference, in meters? Express answer in terms of π

Mathematics
1 answer:
ad-work [718]2 years ago
8 0

Answer:

20.25 pi

Step-by-step explanation:

The circumference of a circle is given by

C = 2 * pi *r

9 pi = 2 * pi *r

Divide each side by 2pi

9pi / 2 pi = 2 pi r / 2 pi

4.5 = r

Now we can find area

A = pi r^2

= pi ( 4.5)^2

20.25 pi

You might be interested in
A 2D vector can have a component equal to zero even when its magnitude is nonzero.
lys-0071 [83]

Answer:

T F F F T F T

Step-by-step explanation:

A 2D vector can have a component equal to zero even when its magnitude is nonzero. TRUE.

it will be actually a 1d vector, but it's still a 2d vector too. this happens when the vector it's aligned to one of the axis.

The direction of a vector can be different in different coordinate systems. FALSE

The direction of a vector is independent of any coordinate system.

A 2D vector can have a magnitude equal to zero even when one of its components it nonzero. FALSE.

because the only way \sqrt{x^{2} +y^{2} } =0 is that both x and y are equal to zero

The magnitude of a vector can be different in different coordinate systems. FALSE.

The magnitude stays the same in every coordinate system

It is possible to multiply a vector by a scalar. TRUE.

it changes only it's magnitude.

It is possible to add a scalar to a vector. FALSE.

you can´t sum elements of diferent spaces. R, R^{2}, etc

The components of a vector can be different in different coordinate systems.TRUE.

The components of a vector are just a way for identifying the vector, in a determinate coordinate system, the way i call those components will change as I change the name I call every point in the plane.

5 0
3 years ago
I attached the files
grandymaker [24]

Answer: why do you have so many files

Step-by-step explanation: plz tell me lol

3 0
3 years ago
9. The sum of two consecutive integers is 41 less than<br> four times the larger. Find the numbers.
Maksim231197 [3]

Answer:

19 and 20

Step-by-step explanation:

Let x be the larger number

x - 1 + x = 4x - 41

We can combine like terms and isolate x:

2x - 1 = 4x - 41

2x = 40

x = 20

20 - 1 = 19

5 0
3 years ago
Please help me! what is the end behavior of f(x)?
notsponge [240]
Dddddddddddddddd i think
6 0
3 years ago
dentify the type of observational study​ (cross-sectional, retrospective, or​ prospective) described below. A research company u
Fantom [35]

Answer:

- A cross-sectional study.

Step-by-step explanation:

A Cross-sectional study is demonstrated as the type of observational study in which the data or a representative subset of a population collected at a particular point in time is analyzed.

As per the given details, the observational study conducted by the research company would exemplify 'a cross-sectional study' as it aims to evaluate the data('viewing habits of about 50005000 ​households) collected at a specific point in time i.e. 'today' in order to 'determine the proportion of households tuning to a particular sports program.'

8 0
3 years ago
Other questions:
  • Part 2: Create a scenario for a geometric sequence. For example, Anthony goes to the gym for ______ minutes on Monday. Every day
    15·1 answer
  • The study reported, "Girls aged 5-15 in villages that received the recruiting services were 3 to 5 percentage points more likely
    5·1 answer
  • How does multiplication relate to time conversion?
    6·1 answer
  • I just need the compound inequality <br> Plz help
    6·1 answer
  • Use the rules of equations and inverse operations to solve the equation 3x^2=;8
    12·1 answer
  • I need help on this question
    12·1 answer
  • Determine the number of significant figures in 10-L
    9·1 answer
  • 6.632.512 what is the value 3
    11·2 answers
  • Which expression is equivalent to 9m – 36?
    11·1 answer
  • Leonard has twice as much money as Danny. If Leonard has x dollars, then Fanny has
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!