Answer:



Step-by-step explanation:
The given probabilities are:


Their sum is 
The probabilities that will complete the model should add up to
so that the sum of all probabilities is 1.





Answer:
The graph in the attached figure
Step-by-step explanation:
we have
-----> equation A
-----> equation B
we know that
The solution of the system of equations is the intersection point both graphs
In this problem
The intersection point is 
therefore
The solution is the point 
using a graphing tool
see the attached figure
3x-4y=12
4y=3x-12
y=(3x-12)/4
y=(3/4)x-3
Answer:
18.90
Step-by-step explanation:
3x12=36
36-15=21
21 x 0.9
2 over 3 you're welcome :)