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
Akimi4 [234]
3 years ago
8

From a class of girls and boys the probability that one student chosen at random to answer a question will be a girl is 1/3 . If

four boys leave the class , the probability that a student chosen at random to answer a question will be a girl is 2/5 . How many boys and girls are there in the class before the four boys leave ?
Mathematics
2 answers:
Drupady [299]3 years ago
5 0
Let the no. of girls be x and boys be y......
x/y=1/3
=>3x=y            ...............(I)
now 4 boys leave the class is then
x/y-4=2/5
=>5x=2y-8
(I)=>5x=2(3x)-8
x=8
now 3x=y
=>y=24
therefore no. of girls is 8 and the no. of boy is 24..............
I have tried my best.....hope i helped............
kotykmax [81]3 years ago
4 0

Answer:

no

Step-by-step explanation:

You might be interested in
((-3, 2)
Paladinen [302]

Answer:

3x + 5y= 9 is the answer ...

3 0
3 years ago
! HELP PLEASE !
EastWind [94]

Answer:

use a calulator it can help

Step-by-step explanation:

.

3 0
3 years ago
Read 2 more answers
Please give me the correct answer ​
Slav-nsk [51]

Answer:

dr drazzle because his simplified form is most reasonable

3 0
3 years ago
Read 2 more answers
Find the area of a triangle with base 21 inches and the height 8 inches
ankoles [38]

Answer:

84in²

Step-by-step explanation:

this is very easy

6 0
1 year ago
Solve the equation by finding square roots.<br><br> 4x^2 = 36
Debora [2.8K]
First divide by 4 to get x^2=9. Then take the square root of both sides. x=3 and x = -3.
3 0
3 years ago
Other questions:
  • Jill earns $15 per hour babysitting plus a transportation fee of $5 per job. Write a formula for E, Jill's earnings per babysitt
    6·2 answers
  • Need help thank you!
    11·1 answer
  • if y is 12 times x, which equation shows the relationship between x and y? y = 12x x = 12y x = 12 y y = 12 x
    5·2 answers
  • Charlie needs to rent a car. Company A charges a rate of $40 per day,d, and company B charges a $60 fee plus $20 per day. For wh
    9·1 answer
  • What is 7 1/2 + (-8/9)
    11·2 answers
  • It takes 5 cooks 5 hours to bake 5 pies. Assuming no change of rate, how many
    11·1 answer
  • Solve the exponential equation using the method of relating the bases by first rewriting the equation in the form of e^u=e^v
    10·1 answer
  • Write an equation of the line with y-intercept 3 that is parallel to y=-3/4x-4
    6·1 answer
  • Somebody help please
    5·2 answers
  • What is the value of this example? <br><br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B6%7D%20%7C%20%20%5Cdiv%2012" id
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!