Answer:
THE ANSWER IS C
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
The probability of the tip to be more than 200 is 0.1.
Step-by-step explanation:
As per the given data 
Amount of tip            Number
      0-20                       200
    20-50                       100
    50-100                      75
  100-200                     75
     200+                        50
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Total=                         500
So what is the probability of tip to be more than 200 is given as 

From the table the value is 50 for the tip to be more than 200 where as the total occurrences are 500 so substituting values:

So the probability of the tip to be more than 200 is 0.1.
 
        
             
        
        
        
Answer:
<h2>18mins</h2>
Step-by-step explanation:
This problem is on combined work rate
given that 
Marta can vacuum the house in 30 min
then her rate= 1/30 
Also, her daughter will take 45 min to vacuum the house
her  daughter's rate will be = 1/45
then the combined work rate is 
1/30+1/45=1/T
30+45/30*45=1/T
75/1350= 1/T
1/18=1/T
This means that they will both take 18 minutes working together to vacum a house
 
        
             
        
        
        
Answer:It would be 8ft ??
Step-by-step explanation: 3ft = 8ft
 
        
             
        
        
        
Answer:
2.1
Step-by-step explanation: