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
alekssr [168]
3 years ago
8

It was 9/20 ..

Mathematics
1 answer:
Elza [17]3 years ago
6 0

Answer:

\frac{9}{20}

Step-by-step explanation:

We want probability that 1st is girl AND 2nd is girl as well.

In probability "AND" means multiplication and "OR" means "addition".

<u><em>We find the probabilities separately and multiply them together, since "AND".</em></u>

<u><em /></u>

  • P(girl from 7th grader) = number of girl 7th grader/total number of 7th grader

=9/10

  • P(girl from 8th grade) = number of girl in 8th grade/total number of 8th grader

=2/4

P(both girls) = 9/10 * 2/4 =9/20

You might be interested in
The Rotation R maps all 60° about O the center of the regular hexagon. State the image of B for the following rotation.
Andru [333]
It is B. Since each angle is 60 degrees, if you rotate B counterclockwise 6 times, it means that you rotated B 360 degrees. Therefore, the image of B would be B.
7 0
3 years ago
Read 2 more answers
Please show ur work
Fiesta28 [93]
B. 1/7 i just took the test and thats what i got hope it helps


3 0
3 years ago
Which equation matches the graph?
ipn [44]
The equation that matches the graph is the second one !
4 0
3 years ago
PLZ HELP HELP PLZZ 5/5 × 2 and 3/4 will be greater than less than or equal to 2 and 3/4??​
il63 [147K]
1)2
2) less than
I think
7 0
3 years ago
Read 2 more answers
Answers, please send help, now.
Ksenya-84 [330]
Which Question? All of them?
3 0
3 years ago
Other questions:
  • She decide to use graph A to predict the number of bottles of water that would be sold when the temperature is 100
    9·1 answer
  • A random sample of people was asked to report the age and distance driven of their primary car. A line was fit to the data to mo
    11·1 answer
  • tickets to the theater cost $12 for adults and $9 for children. A group of 15 adults and children are attending the theater. If
    7·2 answers
  • What 2 to the power of four (5.2-3.2) divide by 4
    13·2 answers
  • Find the following when a = -1, b = 2, c = -1/4<br> (4b - 3)/(2a) -1
    15·1 answer
  • I need help now plz​
    7·1 answer
  • Credit usage increased during the 20s based on many factors. Explain
    9·1 answer
  • 1, write a ratio in all three forms, to compare the days without games to the days in a year?
    12·1 answer
  • Find the value of x (and y, if applicable)
    14·1 answer
  • Given h(x) = 4x – 5, solve for a when h(x) = 7.
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!