Answer:
A:  W = 8x
B:  12y + 320
C:  44
Step-by-step explanation:
A:  Lana can make $8 an hour.
W = 8x
B:  She makes $12 per hour for every hour of overtime.  This means that she already worked 40 hours with regular pay.  She has already made $320.
40 × $8 = $320
S = 12y + 320
C:  Plug in the amount Lana earned into the second equation.  The second equation will account for pay from both regular and overtime hours.
S = 12y + 320
368 = 12y + 320
368 - 320 = (12y + 320) - 320
48 = 12y
48/12 = (12y)/12
4 = y 
y = 4
Lana worked 4 hours of overtime and 40 hours of regular hours.  In total, she worked 44 hours.
4 + 40 = 44
 
        
                    
             
        
        
        
The answer is 2/11 in simplest form
        
             
        
        
        
Answer:
1) a) 0.8
b) 0.6
2) a) 0.08
b) 0.14
Step-by-step explanation:
1) Given 
 and
 and 
Let us learn about a formula:

(a) If A and B are mutually exclusive i.e. no common thing in the two events.
In other words:
 =
 =  = 0
 = 0
Using above formula:

(b)  P(A and B) = 0.2
Using above formula:

*************************************
1) Given 
 and
 and 
Let us learn about a formula:
 for dependent events
  for dependent events
 for independent events.
 for independent events.
(a) If A and B are independent events :
Using the above formula for independent events:

(b)  
Using above formula:

 
        
             
        
        
        
9514 1404 393
Answer:
   10)  C 4/9
   11)  B 24
Step-by-step explanation:
10) The area ratio is the square of the ratio of side lengths. The ratio of side lengths is ...
   RS/LM = 6/9 = 2/3
Then the area ratio is ...
   (2/3)² = 4/9
__
11) Using the result of question 10, the area of ∆RST is ...
   (4/9)(54 in²) = 24 in²
 
        
             
        
        
        
Answer:
-1
Step-by-step explanation: