280,706 is the standard form
        
             
        
        
        
Answer:
5.95
Step-by-step explanation:

3.25 + 2 7/10 = 3.25 + 2.70 = 5.95
 
        
             
        
        
        
X times 2x=50
2x^2=50
Divide by 2
X^2= 25
X=5
Length is 10 ft
        
                    
             
        
        
        
Answer:
-11
Step-by-step explanation:
Multiply two negatives and you get a positive so
-11 x (-11) = 121
 
        
                    
             
        
        
        
Answer:
B. 108 calories
Step-by-step explanation:
The mean number of a data set is 

Corn chips: 230 calories
Popcorn: 25 calories
Potato chips: 115 calories
Pretzels: 62 calories
Thus,
The sum of all calories 
The number of productrs = 4
The mean number of calories 