It’s D
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Answer:
Angle F, or 1; see below
Step-by-step explanation:
When two triangles are congruent, everything about them is equal. Angle C is congruent F because they are in the same position on the triangle.
  
        
             
        
        
        
Answer:
x²-y² = 40
Step-by-step explanation:
Factorising x²-y²:
x²-y² = (x+y)(x-y)
This is due to the property that states:
a²+b² = (a+b)(a-b)
Substituting the given values into the above equation:
x²-y² = (10)(4)
= 40
Hence, x²-y² = 40
<em>Hope this helps and be sure to have a wonderful time ahead at Brainly! :D</em>
 
        
                    
             
        
        
        
Answer:
2.1167×10⁸
Step-by-step explanation:
Hopefully I'm correct but we're just learning this subject so sorry if wrong 
 
        
                    
             
        
        
        
Answer:
S(-2,12)
y= -2(x+2)²+12
Location of coordinate axes: 
y=0 → x= -2±√6 (-2-√6,0) (-2+√6,0)
x=0 → y=4 (0,4)