Ask
your own question, for FREE!
Mathematics
12 Online
OpenStudy (anonymous):
A bag has 5 red marbles, 6 blue marbles and 4 black marbles. What is the probability of picking a black marble, replacing it, and then picking a black marble? A. 4/15 B. 8/75 C.16/225 D. 5/14
Still Need Help?
Join the QuestionCove community and study together with friends!
OpenStudy (anonymous):
is it A.?
OpenStudy (anonymous):
the probability of picking a black marble is 4 out of 15 every time
OpenStudy (anonymous):
because there is always 15 marbles in the bag and 4 of them are always black
OpenStudy (anonymous):
goodjob!
Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!
Join our real-time social learning platform and learn together with your friends!
Join our real-time social learning platform and learn together with your friends!
Latest Questions
heartlessprophet:
How do i get paid from work when im in job court ?
Aubree:
Guys, what does love feel like? I've been getting a tight chest and when I talk to him my heart rate hangs out around 100-120 beats per min, and when he doe
thereneelg:
ok... anyone have advice?? ...I did Choir all throughout Middle school and have ALWAYS been put in Soprano those three years.
kamariana:
The Byzantine Procopius is known for (5 points) reconquering much of the old Roma
chuckD:
hellp!!! what does it mean to describe a scientist as skeptical Why is sceptical
DoltonCarlee:
So like do y'all know anything about the first world war?
thehearken:
anyone know how to explain this so its easier for me to understand? b(1)=2, b(n)=
heartlessprophet:
How do i get paid from work when im in job court ?
18 hours ago
0 Replies
0 Medals
Aubree:
Guys, what does love feel like? I've been getting a tight chest and when I talk to him my heart rate hangs out around 100-120 beats per min, and when he doe
21 hours ago
8 Replies
1 Medal
thereneelg:
ok... anyone have advice?? ...I did Choir all throughout Middle school and have ALWAYS been put in Soprano those three years.
1 day ago
6 Replies
1 Medal
kamariana:
The Byzantine Procopius is known for (5 points) reconquering much of the old Roma
2 days ago
0 Replies
0 Medals
chuckD:
hellp!!! what does it mean to describe a scientist as skeptical Why is sceptical
2 days ago
2 Replies
1 Medal
DoltonCarlee:
So like do y'all know anything about the first world war?
1 day ago
2 Replies
0 Medals
thehearken:
anyone know how to explain this so its easier for me to understand? b(1)=2, b(n)=
2 days ago
5 Replies
2 Medals
