The first one is 4 x 10^-9
second one is 4 x 10^10
third one is 5 x 10^7
fourth on is 2 x 10^-5
        
             
        
        
        
Answer:
392
Step-by-step explanation:
m = 8 and n = 14
Substituting the values of m and n in the question, we get :
 7m + 3mn
=( 7 x 8) +(3 x 8 x 14)
= 56 + 336
= 392
 
        
                    
             
        
        
        
Answer: 
I do not know
Step-by-step explanation:
explain it more
 
        
             
        
        
        
Answer:
30 ft²
Step-by-step explanation:
The formula to find the area of a rectangle is:
Length x Width