Answer:
it is 34
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
= 8.5 hours 
= 8 hours 30 minutes
Step-by-step explanation:
Full time spent = 100%
If 40% = 3.4 hours , 
What about 100% = ?
= (100 x 3.4) ÷ 40
= 340 ÷ 40 
= 8.5 hours 
 
        
                    
             
        
        
        
A, B, and D. A trapezoid cannot be parallel because the 2 left and right sides will eventually meet/connect. 
        
             
        
        
        
Answer:
The number of boys are 18 and the number of girls are 30. 
Step-by-step explanation:
The ratio of number of girls to the boys = 3 : 5 
Let the number of girls is g and boys is b initially. 
b : g = 3 : 5 
5 b = 3 g ..... (1)
Now, girls are 6 + g and boys are b - 9
So, the ratio is 
(b - 9) : (6 + g) = 1 : 4
4 b - 36 = 6 + g 
4 b - g = 42 .... (2) 
From ( 1 ) and ( 2 )

And , g = 5 x 18/3 = 30 
So, the number of boys are 18 and the number of girls are 30.  
 
        
             
        
        
        

Answer: -115 should be added to 18 to get a sum of -97.
Hope this helps. - M