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
Irina18 [472]
2 years ago
7

In a class of 30 students there are 17 girls. two students are picked randomly to represent the class in the SRC. determine the

probability that:
a. both students are boys
b. both students are girls
c. one of the students is a boy
Mathematics
1 answer:
Alla [95]2 years ago
4 0

Answer:

See below in bold,.

Step-by-step explanation:

There are 30-17 = 13 boys in the class.

a.  Prob(First is a boy ) = 13/30 and Prob( second is a boy = 12/29).

As these 2 events are independent:

Prob( 2 boys being picked) = 13/30 * 12/29 =  26/145 or 0.179 to the nearest thousandth.

b. By a similar method to a:

Prob ( 2 girls being picked) =  17/30 * 16/29 = 136/435 = 0.313 to the nearest thousandth.

c.  Prob (First student is a boy and second is a girl) =  13/30 * 17/29 = 221/870.

Prob ( first student is a girl and second is a boy)  = 17/30 * 13/29 = 221/870

These 2 events are not independent so they are added:

Prob( one of the students is a boy)  = 2 (221/870 =  221/435 = 0.508 to the nearest thousandth.

You might be interested in
What is the unit rate of 5 pounds of oranges cost 10.45?<br> find the unit rate
nataly862011 [7]

Answer:

The answer is 2.09 per pound.

Step-by-step explanation:

To find the unit rte, you divide 10.45 by 5.

8 0
3 years ago
What is the distance between 12 7 and 3 7 !
Vinil7 [7]

Answer:

The answer is 15 units is the answer boom

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Daniel got in his car at 2:15 P.M. and started driving toward his grandmother's house. After driving for 2 hours and 31 minutes,
Zielflug [23.3K]
2:15+2:31=4:46
4:46+1:16=5:62=6:02
6:02+2:56 =8:56pm or 20:56
7 0
2 years ago
Read 2 more answers
Help asap plssssss, brainliest given!!
artcher [175]

Answer:

y=  1500x = 29690

y=# of movie screens

x= years after 1996

Step-by-step explanation:

3 0
3 years ago
In 1989, Dutch ice skater Dries van Wijhe skated 200 km at an average speed of 35.27 km/h. How long was he skating? Use the form
katrin [286]
200=35.27t
 Divide 35.72 on both sides 
t=<span>5.670542</span>
5 0
3 years ago
Read 2 more answers
Other questions:
  • You buy a $500 TV marked down 15% payment and agree to pay the balance in 12 equal monthly payments. How much is each payment
    5·2 answers
  • M(3-4m)=7+4(8-m2) m=?
    14·1 answer
  • How do u find the range
    10·1 answer
  • What is the completely simplified equivalent of 2 over 5+i? the 'i' is 1! thx for the help!
    9·1 answer
  • Please help ASAP :)))))
    13·1 answer
  • paul a dentist determined that the number of cavities that develops in his patients mouth each year varies inversely to the numb
    10·2 answers
  • 35 divided by 1 3/4 and 5
    7·1 answer
  • Solve.<br> HELPPP PLEASEEE
    14·2 answers
  • HELP ME PLSSSS........
    14·2 answers
  • If 3 balloons cost $2.00, how much do 9 balloons cost?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!