= 7/8 − 1/5
= ((7 × 5) − (1 × 8)) / (8 × 5) 
= (35 - 8) / 40
= 27/40
= 27/40
SO, 27/40 minutes are NOT spend on instructions. 
Hope I helped:P
        
                    
             
        
        
        
Answer:
a) 16 in³
Step-by-step explanation:
Vol (cyl) = πr²h = 54
Vol (cone) =  πr²h/3
54/3 = 16
 
        
             
        
        
        
Lines y=-x+2 and y=3x+1 intersect the y=axis. If you plot them out on a graph using the equation y=mx+b, then they are parallel and are set on the y-axis.
        
             
        
        
        
Answer: 3b^3(3b^5+8)
Step-by-step explanation:
They have a 3 in common and both expressions have at least 3 b 's
 
        
             
        
        
        
Answer:
263,870
Step-by-step explanation: