Answer:
mary=10 jack=15
Step-by-step explanation:
After 4 years Mary (x+4), Jack's age (x+5) + 4.
sum of the ages after 4 years :(x+4) + (x+5) +4=33 
Simplifying the equation:
 2x+13 = 33 ----->> 2x=20----->>>>x = 10 Mary's age
 10 + 5 = 15 which is Jack's age. 
 
        
             
        
        
        
Answer:
A and C :)
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Answer:
option A 
Step-by-step explanation:
plz mark my answer as brainlist plzzzz . hope this will be helpful to you.
 
        
                    
             
        
        
        
-8g is greater than or equal to 14
        
                    
             
        
        
        
Answer: mean = 318.3
Median =330
Mode= 200
Step-by-step explanation:
Mean (average) is the total sum of values in a given a data set ÷ number of values 
= 3820/12
Mean= 318.3
Median= midpoint value in a given data set. When the data set is an even number, median is calculated with the 2 middle point values as n1 + n2/2
Step 1: we rearranged the data set from least to highest value to give
200,200,220, 240,300,320,340,360,380,400,420 and 440
Median= 320 + 340/2
=660/2 = 340
Mode is the value with highest frequency in a given data set, from the given question, mode = 200
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