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
solong [7]
3 years ago
10

A martial artist is practicing breaking 5 boards. He is able to break a board with probability 0.8. (a) What is the probability

that he breaks exactly 2 out of the 5 boards that are placed before him? (b) What is the probability that he breaks at most 3 out of the 5 boards that are placed before him? (c) What is the expected number of boards he will break?
Mathematics
1 answer:
konstantin123 [22]3 years ago
4 0

Answer:

(a) = 0.32 or 8/25

(b) = 0.48 or 12/25

(c) = 4 Boards

Step-by-step explanation:

(a):

0.8 x 2/5

8/10 x 4/10

(8 x 4) / (10 x 10)

(32) / (100)

0.32 or 8/25

(b):

0.8 x 3/5

8/10 x 6/10

(8 x 6) / (10 x 10)

(48) / (100)

0.48 or 12/25

(c):

0.8 x 5

8/10 x 50/10

(8 x 50) / (10 x 10)

(400) / (100)

4 Boards

You might be interested in
4. The table below shows the cost of pencils at the local discount store. Cost of Pencils Number of Total Cost Pencils 10 $1.25
fomenos

Answer:

1.25 / 10 = 0.125

0.125 is about 0.13

13 cents or $0.13

4 0
2 years ago
The events A and B are independent such that P(A)=0.5 and P(B)=0.7.
pochemuha

Answer:

the answer to this is 0.15 #4

8 0
3 years ago
Wich hotel costs the least per night ? :)
timofeeve [1]

Answer:

answer b

step - by - step explanation

  1. Hotel A. per night charge is 64 $
  2. Hotel B. per night charge is 60$
  3. Hotel c. per night charge is 65$
7 0
3 years ago
daniiel is currently 26 years older than his son. in 6 years he will be three times older than his son. how old are both of them
Molodets [167]

Answer:

Daniiel is 33 years old.

The son is 7 years old.

Step-by-step explanation:

x+26=3x

The x represents the son.

To solve for x:

-26=x-3x

-26=-2x

x=13

Since the father will be 3 times his son's age in six years we subtract 6.

x=7

This means the son is 7 years old as of right now. To find the father's age you do 7+26=33

7 0
3 years ago
The graph of f(t) = 6 x 2^t shows the value of a rare coin in year t. What is the meaning of the y-intercept?
Flauer [41]
When the graph intersects the y-axis, it means it's x-coordinate is 0, or t = 0.
Hence, f(t) = 6 × 2^0 = 6.
y = 6 at y-intercept.
3 0
2 years ago
Read 2 more answers
Other questions:
  • If point is on the bisector of an angle, then it is:
    6·2 answers
  • What is the sum of 0.380 and 0.245​
    15·1 answer
  • A right triangle has a hypotenuse of 32 cm and a base measurement of 8 cm. What is the length of its altitude leg to the nearest
    5·1 answer
  • PLEASE HELP ME WITH THESE 2 QUESTIONS YOU GUYS, I AM TRYING TO PASS MATH CLASS. PLEASE. please. I AM GIVING 30 PTS FOR THIS. PLE
    10·2 answers
  • Correct answers only! 20 points and brainliest to the correct answer!
    9·1 answer
  • Please help me i need an answer
    6·1 answer
  • Lewis checked the balance of his savings
    9·1 answer
  • Please help. -9x+12x=3(2-x)
    5·1 answer
  • ANSWER THIS CORRECTLY FOR BRAINLIEST!!!!
    5·1 answer
  • 50 points for this one
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!