Answer:
Step-by-step explanation:
you know the total angle is 180° from A to D
and you know that ∠BEC is 90°
also you are told that ∠CED is 18°
and that ∠AEB is 4x°
so just put that all together 
180=90 + 18 +4x
now solve for X
180-90-18=4x
72=4x
18 = x
so now you know X
now solve ∠AEB
4(18) = 72°
∠AEB= 72°
:)
 
        
             
        
        
        
Negative exponents create the reciprocal of the original number:
2^2=4
2^-2=1/4
4^4=64
4^-4=1/64
        
                    
             
        
        
        
Answer:
 I think these are the right answers. The answer to one is 32. The answer to two is 38.
1: 2[18-(5+3^2)/7]
 2[18-(5+9)/7]
 2[18-14/7]
 2[18-2]
 2 times 16 = 32
2: I used a calculator for this one. 
 
 
 
        
             
        
        
        
The base value is the current value
Good luck! I hope this helps!
        
             
        
        
        
Soup b; no
soup c; yes
soup d; no
soup e; yes