Answer:
   ΔDCE by ASA
Step-by-step explanation:
The marks on the diagram show AE ≅ DE. We know vertical angles AEB and DEC are congruent, and we know alternate interior angles BAE and CDE are congruent. The congruent angles we have identified are on either end of the congruent segment, so the ASA theorem applies.
Matching corresponding vertices, we can declare ΔABE ≅ ΔDCE.
 
        
             
        
        
        
Answer:
x = 62.3 degrees.
Step-by-step explanation:
We should notice a certain trigonometric function that works here.
tan x = opposite side / adjacent side
tan x =  40/ 21
x = arctan (40/21) = 62.3005 degrees
x = 62.3 degrees.
 
        
             
        
        
        
Answer:
The first Answer is
  x-min = 0, x-max = 20
What is the best window range of y-values to find the solution?
y-min = 20 , y-max = 40
What is the solution?
8 games will cost $32
 
        
             
        
        
        
Answer:
Step-by-step explanation:
Cost of two tickets = 2 * 30 = £60
Let the amount with Puvi = £x
Money spent on dinner = (1/3)*x 
                                         


Total money - money spent on dinner - money spent on dessert = 60

Money that Puvi had at the start of the night = £ 240
 
        
             
        
        
        
The answer is 144 but I do not know the property