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
nekit [7.7K]
3 years ago
9

Sixty percent of the students at a certain school wear neither a ring nor a necklace. Twenty percent wear a ring and 30 percent

wear a necklace. If one of the students is chosen randomly, what is the probability that this student is wearing (a) a ring or a necklace?

Mathematics
1 answer:
Reptile [31]3 years ago
7 0

Answer:

0.4

Step-by-step explanation:

Given

60 % wear neither ring nor a necklace

20 % wear a ring

30 % wear necklace

This question can be Solved by using Venn diagram

If one person is choosen randomly  among the given student the probability that this student is wearing a ring or necklace is

P\left ( wear \ ring\ or \ necklace )+P\left ( neither\ ring\ or\ necklace)=1

P\left ( wear \ ring\ or\ necklace )=1-0.6=0.4

The sum of probabilty is equal to 1 because it completes the set

Therefore the required probabilty is 0.4

You might be interested in
Convert 12.4 pounds to ounces?
raketka [301]

Answer:

198.4 ounches is the real answer

4 0
2 years ago
Write these values in order starting with the smallest . <br> 0.15 12% 1/10 1/20
Vikki [24]

Answer:

1/10, 1/20, 12%, 0.15

Step-by-step explanation:

1/20=1÷20=0.05

12%= 12÷100=0.12

1/10= 1÷10= 0.01

6 0
3 years ago
HELP ASAP PLS! The ratio of bows to headbands of Monique’s hair accessories is 8:4. Select all true statements.
Ratling [72]
Obviously a b c & d.
3 0
3 years ago
Write an equation of the line passing through point P(4, -6) that is perpindicular to the line y= -3.​
FinnZ [79.3K]

Answer: y=1/3x - 22/3

Step-by-step explanation:

6 0
3 years ago
Solve 7 ÷ one half = ___.<br> Question 1 options:<br><br> 14<br><br> 15<br><br> 24<br><br> 40
Norma-Jean [14]

Answer:

O 14

Step-by-step explanation:

hope it is helpful :)

7 0
2 years ago
Other questions:
  • Please help me :( I would appreciate it
    8·1 answer
  • If the standard deviation of the data values in a sample is 17, what is the variance of the data values
    11·2 answers
  • Determine whether the relation is a function. {(−3,−6),(−2,−4),(−1,−2),(0,0),(1,2),(2,4),(3,6)}
    9·1 answer
  • Is this equation true?<br> 0.025 + 0.17 = 0.42
    9·2 answers
  • There are 15 male teachers in the school. There are 35 female teachers in the school. Fill in the table
    15·1 answer
  • If the vertex H of a triangle is at (- 2, 2) , what are the coordinates of H in the dilation of the triangle when the origin is
    9·1 answer
  • Find the area of the figure.. Single choice.
    6·1 answer
  • Help meeeeeeeeeeeeeee
    12·1 answer
  • Let’s work with some actual data this time. Go online to research and find a set of real-world data in two variables. The data c
    8·1 answer
  • Witch statement below best describes the motion of the car?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!