Answer:
1
it's needs 20 characters so euwbwjwuw
 
        
                    
             
        
        
        
Answer: 5/4
Explanation: 
We have the same denominator so we can just add the numerator.
= 6/8 + 4/8 
=10/8
10/8 can be simplified 
=5/4
        
             
        
        
        
Answer: Option C. 8,064 pounds
Solution:
Unit weight: U=63 pounds/foot^3
Total Weight: W=?
W=U*V
Volume: V
Length: l=8 feet
Width: w=4 feet
Height: h=4 feet
V=l*w*h
Replacing the knwon values in the formula above:
V=(8 feet)*(4 feet)*(4 feet)
V=128 feet^3
Replacing in the formula of total Weight:
W=U*V
W=(63 pounds/foot^3)*(128 feet^3)
W=8,064 pounds