Answer:
y = 10°
x = 64° 
Step-by-step explanation:
Parallelogram is a quadrilateral with the opposite sides parallel to each other. Opposite sides are equal in length. Opposite angles are equal in a parallelogram. 
For the figure to be a parallelograms, since opposite angle are equal 
 12y + 8 = 2x 
2x - 12y = 8 ...................(i)
2x + 5y + 2 = 180(supplementary angle)
2x + 5y = 178..............(ii)
combine the equation
2x - 12y = 8 ...................(i)
2x + 5y = 178..............(ii)
make x subject of the formula in equation (i)
2x - 12y = 8 ...................(i)
2x = 8 + 12y
x = 4 + 6y
put the value of x in equation (ii)
2x + 5y = 178..............(ii)
2(4 + 6y) + 5y = 178
8 + 12y + 5y = 178
8 + 17y = 178
17y = 170
divide both sides by 17
y = 170/17
y = 10°
Put the value of y in equation (i)
2x - 12y = 8 ...................(i)
2x - 12(10) = 8
2x - 120 = 8
2x = 128
x = 128/2
x = 64° 
 
        
             
        
        
        
Answer:
9
Step-by-step explanation:
 
        
                    
             
        
        
        
1/2 hour = 105 miles
Divide by 1/2 on both sides :
1/4 hour = 52.5 miles
        
             
        
        
        
Answer:
For the first one it is BEA and the second one is CED
I hope this help I would also appreciate brainliest please :)
 
        
             
        
        
        
Answer:
Step-by-step explanation:
We that the area of a circle is Pi times r^2 where r is the radius 
Let A be the area of the first circle and S the area of the second one and T the total one 
A=4^2× Pi 
S=6^2× Pi
T = Pi( 4^2 +6^2)
 = Pi ( 16+36) = Pi× 52 
52 is the radius square 
So r = root square 52 = 2 root square 13