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
GarryVolchara [31]
3 years ago
7

Geometry Question find the area of the circle

Mathematics
2 answers:
olasank [31]3 years ago
8 0
Formula for the area of a circle is Pi*radius squared
So, we do Pi*2^2 which is 12.57
Phoenix [80]3 years ago
3 0

Answer:

4π cm²

Step-by-step explanation:

The radius of this circle is half the diameter, that is, half of 4 cm, or 2 cm.

Then the area of the circle is A = πr²  =>  A = π(2 cm)² = 4π cm²

You might be interested in
Part A: What is the measure of angle x? Show your work. (5 points)
stepan [7]

Answer:

angle x=40

Step-by-step explanation:

Angle CD on the bottom is a 180 angle. If you subtract it by 110 it's 70. The two bottom angles are equal so it also equals 70, add them and you get 140. Subtract 180 by 140 and it means x=40!

6 0
3 years ago
Read 2 more answers
A right triangle has a hypotenuse of 43cm and an angle of 56 degrees opposite leg m . What is the length of leg m rounded to the
Alika [10]

Answer:

you are my idol

Step-by-step explanation:

Keep working. Karma is real

6 0
3 years ago
A real estate agent has 19 properties that she shows. She feels that there is a 30% chance of selling any one property during a
netineya [11]

Answer:

P(X \geq 5)=1-P(X

We can find the individual probabilities:

P(X=0)=(19C0)(0.3)^0 (1-0.3)^{19-0}=0.00114

P(X=1)=(19C1)(0.3)^1 (1-0.3)^{19-1}=0.0092

P(X=2)=(19C2)(0.3)^2 (1-0.3)^{19-2}=0.0358

P(X=3)=(19C3)(0.3)^3 (1-0.3)^{19-3}=0.0869

P(X=4)=(19C4)(0.3)^4 (1-0.3)^{19-4}=0.1491

And replacing we got:

P(X \geq 5) = 1-[0.00114+0.009282+0.0358+0.0869+0.149]= 0.7178

Step-by-step explanation:

Previous concepts

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".

Solution to the problem

Let X the random variable of interest, on this case we now that:

X \sim Binom(n=19, p=0.3)

The probability mass function for the Binomial distribution is given as:

P(X)=(nCx)(p)^x (1-p)^{n-x}

Where (nCx) means combinatory and it's given by this formula:

nCx=\frac{n!}{(n-x)! x!}

And we want to find this probability:

P(X \geq 5)

And we can use the complement rule:

P(X \geq 5)=1-P(X

We can find the individual probabilities:

P(X=0)=(19C0)(0.3)^0 (1-0.3)^{19-0}=0.00114

P(X=1)=(19C1)(0.3)^1 (1-0.3)^{19-1}=0.0092

P(X=2)=(19C2)(0.3)^2 (1-0.3)^{19-2}=0.0358

P(X=3)=(19C3)(0.3)^3 (1-0.3)^{19-3}=0.0869

P(X=4)=(19C4)(0.3)^4 (1-0.3)^{19-4}=0.1491

And replacing we got:

P(X \geq 5) = 1-[0.00114+0.009282+0.0358+0.0869+0.149]= 0.7178

4 0
3 years ago
How many six-digit odd numbers are possible if the left digit cannot be zero?
melisa1 [442]
We are asked for the number of <span>six-digit odd numbers that can be formed. the left-most digit should not be zero because it make the number -five digit already. An odd number ends only in 1, 3, 5, 7 and 9. Using counting, the 6th digit can only have 5 numbers, the 5th, 4th, 3rd, and 2nd can have, 10 numbers. The first number can only have 9 numbers. Hence the total number is 450,000</span>
6 0
3 years ago
The measurements of a box are doubled. What happens to its volume?
jek_recluse [69]
V=LWH
if each is doubled
V=2L2W2H
V=2*2*2*LWH
V=8LWH
volume is multiplied by 8
8 0
3 years ago
Read 2 more answers
Other questions:
  • What is seventy divided by four?
    13·2 answers
  • -4w(w+2) can someone help me find the answer to this please ;c
    5·1 answer
  • What is the LCM of 504 and 594.
    5·1 answer
  • Jason is painting a large circle on one wall of his new apartment. The diameter of the circle will be 8 feet. Approximately how
    9·2 answers
  • A firecracker shoots up from a hill 140 feet high, with an initial speed of 100 feet per second. Using the formula H(t) = −16t2
    12·2 answers
  • Which is greater 10,000 or 337,676
    10·2 answers
  • Brian invests £13400 into his bank account.
    13·1 answer
  • Hey math can you help
    5·1 answer
  • The diameter of a circle is 2 units. What is the radius of the circle?
    7·1 answer
  • Which of the following are more precise than a weight of 1,000 pounds? (Check all that apply)
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!