Basically your just swapping there positions like so:
if x=-5, then 3-2x=13
Hope this helps! :)
        
             
        
        
        
The least common denominator is 36
        
                    
             
        
        
        
Answer:x=143
Step-by-step explanation: set 128=X-15 add 15 to both sides 
 
        
                    
             
        
        
        
Hi there!
We can use the following equation:

z = amount of standard deviations away a value is from the mean (z-score)
σ = standard deviation 
x = value 
μ = mean 
Plug in the knowns for both and rearrange to solve for the mean:

Other given:

Set both equal to each other and solve:

 
        
             
        
        
        
Answer:
a. 0.12109
b. 0.0001668 
c .0.9726
d. 0.01038
e. 0.01211
f. 0.000001731
Step-by-step explanation:
Sample size = 580
Defective units = 8
Number of picks = 2
a) If the first container is defective, there 7 defective containers left in a population of 579. The probability of selecting a defective one is:

b) The probability that both are defective is given by:

c) The probability that both are acceptable is given by:

d) In this case, two defective units were removed from the batch, the probability that the third is also defective is:

e) In this case, one acceptable and one defective unit were removed from the batch, the probability that the third is also defective is:

f) The probability that all three are defective is given by:
