Answer:
Not sure about the GCF but
6(-2b+c+3)
Step-by-step explanation:
 
        
             
        
        
        
If the points B , C and D all lie on the line segment AE then AE = AB + CD + DE
 
        
             
        
        
        
Answer:
Height = 13.5 cm
Perimeter = 81 cm
Step-by-step explanation:
The Area of a parallelogram is given as the product of the base and its height. 
A = base * height
Area, A = 364.5 cm²
Base, b = 27cm
Height, h =? 
Hence, 
364.5 cm² = 27cm * h
h = 364.5 cm² / 27cm
h = 13.5 cm
Perimeter of parallelogram :
P = 2(a + b)
a = height of sides ; b = base
P = 2(13.5cm + 27cm)
P = 2(40.5)
P = 81 cm
 
        
             
        
        
        
Answer:
the first one 8za also plz give heart
Step-by-step explanation:
 i just know
 
        
             
        
        
        
S/2 + 8 = 54
To find out the cost of the spikes, we must isolate the variable. 
first, subtract 8 from both sides.
S/2 +8 = 54
 -8. -8
Now we have
S/2 = 46
now, to find out what s is on its own, we must multiply by the recipricle of S/2. if that doesn't make sense to you, just think of it as cancelling the division by multiplying by 2.
s/2 = 46
*2. *2
s = 92
The spikes cost $92.