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
Elden [556K]
3 years ago
9

Solve problem to find π (please add steps) A=1/2πr^2

Mathematics
1 answer:
PtichkaEL [24]3 years ago
3 0

Answer:

Π = 2A/r^2

\pi =  \frac{2a}{ {r}^{2} }

Step-by-step explanation:

Get rid of the half by taking it to the left side or multiplying a fraction by it's denominator to get rid of it. If you multiplying by it's denominator you must also do the same for the other side. Then get rid of the radius by dividing or taking it to the other side, isolating pi.

Hope this helps. :)

You might be interested in
Limit question please?
Ksivusya [100]
The easiest way to evaluate the limit is to simply subsitute the value into the function

as x approaches -3
just subsitute -3 for x

(-3)³=(-3)(-3)(-3)=-27
answer is -27
7 0
3 years ago
Alaska has a coastline of about 6.64 thousand miles. Florida has about 1.35 thousand miles of coastline. How many times more mil
victus00 [196]
All you need to do is divide 6.64 and 1.35. you would get 4.91851852. But, you need to round to the nearest tenth so it would actually be 4.9.
3 0
3 years ago
In 2014, 85 percent of households in the United States had a computer. For a randomly selected sample of 200 households in 2014,
DochEvi [55]

Answer:

The mean of C is 170 households

The standard deviation of C, is approximately 5 households

Step-by-step explanation:

The given parameters are;

The percentage of households in the United States that had a computer in 2014 = 85%

The size of the randomly selected sample in 2014, n = 200

The random variable representing the number of households that had a computer = C

Therefore, we have;

The probability of a household having a computer P = 85/100 = 0.85

Let

Therefore;

The mean (expected) number in the sample, μₓ, = E(x) = n × P is given as follows;

μₓ = 200 × 0.85 = 170

The mean of C = μₓ = 170

The variance, σ² = n × P × (1 - P) = 200 × 0.85 × (1 - 0.85) = 25.5

Therefore;

The standard deviation, σ = √(σ²) = √(25.5) ≈ 5.05

The standard deviation of C, σ ≈ 5 households (we round (down) to the nearest whole number)

7 0
3 years ago
Read 2 more answers
good morning :) The rental car holds 22 gallons of gas and gets 20 miles per gallon. The trip to Ellis City is 1760 miles. How m
Effectus [21]
1760/ 20 = 88
88/22 = 4
answer = 4
6 0
3 years ago
Which statement best describes the area of the triangle shown below?
cupoosta [38]
It is 4x4 then divide that by 2 since a triangle is half of a square so 16 divided by 2 which is 8
7 0
3 years ago
Other questions:
  • AD= 5x and DE= 3x- 2
    14·2 answers
  • PLEASE HELP !!!!
    12·1 answer
  • How to write fifteen cubed in exponential notation standard form and expanded form
    6·2 answers
  • 7 1/3 ∙ x = 1.6 ÷ 6/11<br><br> x = __ <br><br> Please Help!
    8·1 answer
  • Soon Yee was putting together her notebook after the first day of
    8·1 answer
  • When f(x) = -3, what is x?<br> -29<br> -10<br> -3<br> -1
    9·2 answers
  • PLEASE HELP I HAVE 5 MIN TO TURN THIS IN!!!!
    9·2 answers
  • Evaluate h(x) = -2x + 9 when x = -2,0, and 5.
    6·1 answer
  • Does America live up to its core values?
    14·2 answers
  • Solve the following inequality. Negative one-half p less-than negative 16 Which graph shows the correct solution? A number line
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!