Answer:
Assuming the numerator was 1.

Step-by-step explanation:
Assuming the numerator was 1.

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 
<span>2(7/9)-(1/4) = 47/36 = 1 11/36</span>
The answer is x= 1/5 or 0.2
Answer:
700 meters
Step-by-step explanation: