Answer:
Step-by-step explanation:
First, find the probability of him pulling out a book.
There are 11 objects in total, and there are 4 books.
So, the probability of pulling out a book is 
Next, find the probability of him pulling out a DVD after.
Since a book was taken out, there are only 10 objects left. There are 5 DVDs.
So, the probability of pulling out a DVD is 
, or simplified to 
To find the probability that this happens in order, multiply the probabilities:
x
=
So, the probability is
Answer:
33%
Step-by-step explanation:
So you Subtract 20.8 by 15.6 and you get 5.2.
Then you divide 5.2 by 15.6 getting you .33. Then you'll make it into a percentage getting you 33%. This could be wrong but let me know.
I hope this helps! ^^
2nd one: 2 rectangles can have thr same area but have different perimeters.
Answer:
3/11
Step-by-step explanation:
given that a cell phone company has three different production sites
Site name 1 2 3 Total
Production 60% 30% 10% 100%
Recalled 5% 7% 9%
Prob for recall 0.003 0.021 0.009 0.033
Total probability for recall = 0.033
Prob for recall and came from site 3 = 0.009
So required probability
= If a randomly selected cell phone has been recalled, what is the probability that it came from Site 3
=
