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
mel-nik [20]
3 years ago
14

Jay was reaching into her purse and accidentally spilled her coin purse. 10 pennies fell on the floor. Jay noticed that only 2 o

f the pennies landed on heads. What is the theoretical probability of this happening?
Mathematics
1 answer:
kompoz [17]3 years ago
6 0

Answer:

4.39%

Step-by-step explanation:

There are no marking to identify the coins, so the order is not important. Since the order not important we use combination instead of permutation.

A coin have 2 possible outcome, head or tails. Assuming the coin is fair each outcome will be 50% or 0.5 chance. If heads= A and tails =B, then the probability of 2 pennies will be:

P(A=2) = 2C10 * A^2 * B^(10-2)

P(A=2) = 10*9/2 * 0.5^2 * 0.5^8

P(A=2) = 0.0439= 4.39%

You might be interested in
The function d(x) = |x 100| can be used to find the number of degrees a container of water at a temperature of x degrees Celsius
Volgvan

Answer:

f(d(x)) = \frac{9}{5}|x^{100}| + 32

Step-by-step explanation:

The function d(x) takes a value of x in degrees centigrade and provides the number of degrees that a container of water at that temperature x is far from the boiling point of water.

The function f(d) takes a value d in degrees centigrade and returns a value d(x) in degrees fahrenheit.

Therefore, by doing f(d(x)) we are introducing the function d(x) within the function f(d).

So the range of d(x) now is the domain of f(d(x))

This means that the function f(d(x)) shows the <em>number of degrees Fahrenheit</em> that a water container at a<em> temperature x in degrees Celsius</em> is far from the boiling point of water.

f(d(x)) = \frac{9}{5}|x^{100}| + 32

6 0
3 years ago
Read 2 more answers
Store
patriot [66]

Answer:

Store A: 4

Store B:  1

Store C: 3

Store D: 2

Step-by-step explanation:

I got it right

6 0
3 years ago
Read 2 more answers
Find 15 * 15 * 15 * 500 how does this compare to finding 45 x 500
andrew11 [14]
15 * 15 * 15 * 500 = 1,687,500. it's different from finding 45 * 500 because 
15 * 15* 15 * 500 is the same as writing it as 15^3 * 500. This meaning you multiply the number 15 by itself 3 times, not add it 3 times, which is what
45 * 500 was showing. I hope this helped. 
4 0
3 years ago
If a triangle has a height of 12 in and a base of 5 inbwhats the area
Yuliya22 [10]
Area of a triangle
A=h x b/2=12 x 5/2=30
 please mark me as brainly 

7 0
3 years ago
1. A single scoop ice cream cone is made up of a cone filled with ice cream and a half
tatiyna

Answer:

2.515

Step-by-step explanation:

1. First you add the equation for a cone and a half sphere

(1/3*pi*r^2*h)+(1/2*4/3*pi*r^3)

2. You replace h with 2*r2 because height is 2*Diameter

(1/3*pi*r^2*r2)+(1/2*4/3*pi*r^3)

3. You make the equation equal 100

(1/3*pi*r^2*r2)+(1/2*4/3*pi*r^3)=100

4. Solve for

r=2.515

8 0
3 years ago
Other questions:
  • Select the pronoun that agrees with the antecedent of the sentence below. If my sister or Carol arrives, ask _____ to wait.
    13·1 answer
  • Please explain (picture attached)
    12·1 answer
  • Consist of even number between 30 and 49
    14·1 answer
  • Imkim<br> What is 5 1/4 divided by 1 5/9  ?<br>  <br> Express the answer in simplest form.
    6·1 answer
  • What is an equation for the line that passes through points (8.-3) and (9, 10)?
    12·1 answer
  • I have to find the volume and the surface area of a cereal box.
    12·2 answers
  • hiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii i need help so ya pleasssseeeee oh and answer all of them
    5·1 answer
  • Pls help me answer this :’)
    6·2 answers
  • Please help me dis is my last one
    10·2 answers
  • Leo sold candy bars for a fundraiser. He spent $25 on a box of candy bars and sold them for $2 each. His profit (after earning b
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!