Answer:


Step-by-step explanation:
Given (Omitted from the question)



Solving (a): 
This is calculated using:


<em>We used Total - 1 because it is a probability without replacement</em>
So, we have:





Solving (b) 
This is calculated as:








Answer:
?????
Step-by-step explanation: i cant see the pic
Answer:
42
Step-by-step explanation:
solve for x first
4x+6+7x+15=120
11x+21=120
120-21=99
11x=99
x=9
plug in 9 for Ab equation
4x+6
4(9)+6=42.
2^4(2^3+2^2)
2^4(9+4)
16(13)
208