Answer:
Step-by-step explanation:
Given that a machine produces defective parts with three different probabilities depending on its state of repair. 
condition             Good order         Wearing down               Needs main   Total
Prob                       0.8                            0.1                                   0.1              1
Defective               0.02                          0.1                                   0.3
Joint prob              0.016                         0.01                                0.03        0.056
a) 0.016
b) total = 0.056
c) If not defective from needs maintenance 
Prob for not defective = 
From machine that needs maintenance = 0.07
So reqd prob = 
 
        
             
        
        
        
2.20 rounded to the nearest tenth is 2.2 it is already rounded if it was 2.29 it would be 2.3 
        
             
        
        
        
part a y= x × 100 
Step-by-step explanation:
1 bar is 100 calories so you would times it by 100 for every bar
 
        
             
        
        
        
Answer:
   Pears:  30
Step-by-step explanation:
Constant:
   3x + 5x + 2x = 150
                  10x = 150
                     x = 15   
Multiply ratio with constant from above:
   oranges : apples
        3 * 15 : 5 * 15
             45 : 75       ==>               45 oranges: 75 apples
   pears : apples
    2 * 15 : 5 * 15
         30 : 75          ==>                    30 pears: 75 apples
Check:
45 oranges + 75 apples + 30 pears = 150 fruits
 
        
             
        
        
        
Answer:
Step-by-step explanation:
12) Decrease in miles = 22,250 - 14,500 = 7750 miles

                              = 34.83%
13) Decrease in speed = 40 - 25 = 15 mph

                             = 37.5%