a.
is a proper joint density function if, over its support, 
is non-negative and the integral of is 1. The first condition is easily met as long as 
. To meet the second condition, we require
b. Find the marginal joint density of 
and 
by integrating the joint density with respect to 
:
Then
c. This probability can be found by simply integrating the joint density:
Answer:
{x| x≤ 1/2 or x ≥ 3/4}
Step-by-step explanation:
The values of x that make the factors zero are 3/4 and 1/2. The product of these factors will be positive when both factors are negative (for x < 1/2) or when both factors are positive (x > 3/4). The matching answer selection is the third one.
Treat it like a fraction
18b^2/45b
divide top and bottom by b
18b/45
divide top and bottom by 3
6b/15
divide top and bottom by 3 again
2b/5
2b:5 is the simpliest form of the ratio
Both of the answers are 50%. your welcome person.
Answer:
4 or 5
Step-by-step explanation:
