So, what is the total lenght of the pieces that wer cut off?
we multiply the lenght by the number: 
4 

*5=20+

=21

and we subtract this from the original pipe, that is
30

-21

we need to bring the two fractions to the same denominator (by multiplying the fraction art in the first by 3 and 4 the second): 
30

-21

=9 

so the correct answer is D!
 
        
        
        
Answer:
it has one root x=2/5
Step-by-step explanation:
 
        
             
        
        
        
Answer: 1/25
Step-by-step explanation:
 
        
             
        
        
        
Answer:
the formula represent the correct way is  π(4)^2 (5)
Step-by-step explanation:
The formula that represent the correct way to calculate is given below:
As we know that 
Volume = πr^2 h
where
r denotes the radius i.e. 4 inches 
And, h denotes the height i.e. 5 inches
Now placed these values to the above formula
So, 
= π(4)^2 × 5
= 80π in^3
Hence, the formula represent the correct way is  π(4)^2 (5)
 
        
                    
             
        
        
        
Answer:
the answer would be 4
Step-by-step explanation:
10  -  4 =  6 divided by 1.25 = 4
hope this helps!