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
Tanzania [10]
3 years ago
13

Three letters are chosen at random from the word POSTER. What is the probability that the selection will contain E or O but not

both? E or O or both?
Mathematics
1 answer:
prohojiy [21]3 years ago
8 0

Answer:

Total number of way to  pick 3 letters is 6C3 = 20.

Step-by-step explanation:

P(E) = 3/6 = 1/2

P(O) = 3/6 = 1/2

The intersection is P(E n O) = P(E)P(O | E)

= 1/2(2/5)

= 1/5

P( E or O but not both) = P(E and not O) + P(O and not E)

(THis step is easier to understand if you shade in a venn diagram for this):

= [ P(E) - P(E n O) ] + [ P(O) - P(O n E) ]

= 1/2 - 1/5 + 1/2 - 1/5

= 1 - 2/5

= 3/5

The P (E or O or both ) is just the union of the two:

P( E U O) = P(E) + P(O) - P(E n O)

= 1/2 + 1/2 - 1/5

= 4/5

You might be interested in
*click image*
iragen [17]

Answer:

y = -948

Step-by-step explanation:

y/-12 + 16 = 95 (subtract 16 from both sides)

y/-12 = 79 (multiply -12 to both sides)

y = -948

4 0
3 years ago
Help me please !!!!
fiasKO [112]

Answer:

BC = 10

Step-by-step explanation:

BC = BD - CD

BC = 14 - 4

BC = 10

6 0
3 years ago
#6 from the paper please
BabaBlast [244]

Answer:

EK = 9

Step-by-step explanation:

x + 11 = -5 + 2x -5 + 2x

x+11 = -10 + 4x

11 = 3x - 10

3x = 21

x = 7

EK =-5 + 2 × 7

EK = 14 - 5

EK = 9

6 0
3 years ago
Read 2 more answers
What is the answer????
Vinil7 [7]

Answer:

C. Parallelogram and rectangle

Step-by-step explanation:

If it was a square...all the sides would be the same, so it cannot be a square, therefore it is not A or B

3 0
3 years ago
Read 2 more answers
Kate walks half a mile to the library. how many yards does she walk?
Novosadov [1.4K]
880 yards.

Explanation:

In one mile, there are 1760 yards. To find half of that, divide 1760 by two.
1760 ÷ 2 = 880
5 0
3 years ago
Read 2 more answers
Other questions:
  • If $860 is invested for one year at 13% simple interest, how much interest is earned?
    5·2 answers
  • A bird is 4 meters from the ground. The bird is 74 cm higher from the ground than a squirrel that is sitting in a tree. How far
    7·1 answer
  • I need help with problem 27
    5·1 answer
  • Una paid $2.14 for a notebook. She gave the cashier a $5 bill.<br> How much change did she receive?
    10·2 answers
  • ILL BRAINLIEST YOU IF YOU PLEASE HELP ME
    14·1 answer
  • Guys please help me i cant do this
    13·2 answers
  • Which expression is equivalent to the expression -3(4x - 2) - 2x ?
    14·1 answer
  • uhm pueden contestarme esto xfa- es para una amiga y tenemos que tener diferente respuestas si pueden claro :))
    13·1 answer
  • Please help meeeeeee​
    13·1 answer
  • Given that the midpoints of pq is (-3,1) and q (7,5), obtain the co-ordinates of p
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!