Answer:
54.8
Step-by-step explanation:
Pythagorean theorem is a^2+b^2=c^2.
Plug the given values in to get 61^2+b^2=82^2
61^2 is 3,721 and 82^2 is 6,724.
6,724-3,721 is 3,003.
The square root of 3,003, rounded to a reasonable value, is 54.8.
The length of AC is 54.8.
 
        
             
        
        
        
Answer:
63 sq ft
Step-by-step explanation:
The formula for the area of a trapezoid is 
A = h(a + b)/2  where a and b are the lengths of the parallel sides and h is the distance between them
A = 7(11 + 7)/2
    = 7(18)/2
    =  63 sq ft
 
        
             
        
        
        
Answer:
b
Step-by-step explanation:
100
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
k
 
        
                    
             
        
        
        
Answer:
1st box: Asso. prop= m+(4+x)
2nd box: Comm. Prop= m+4=4+m
3rd box: iden. prop= m+0=m
4th box: Zero prop: m x 0=0