Answer:
the answer for this question 1200 
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer: 0.8 or 80%
Step-by-step explanation:
First find the total number of marbles:
10 + 15 + 25 = 50 marbles total
To find the number of marbles that are not black:
15 + 25 = 40 marbles that are not black
Set up ratio:
 = 0.8 or 80%
 = 0.8 or 80%
 
        
             
        
        
        
Answer:
the mean weight is 22 tonnes
Step-by-step explanation:
mean=total sum/number of numbers you added
in this case the question already gave you the total so just divide right away
mean weight= 330/15 = 22 tonnes
 
        
             
        
        
        
Answer:
- 1/12
Step-by-step explanation:
Let -0.0833333 = x  ---  (1)
Multiply both sides by 10.
-0.833333 = 10x   --- (2)
Subtract (2) from (1),
0.75 = -9x
-9x = 
= 


 
        
             
        
        
        
The answer is this: 
A. (6,3)