Option D:

Solution:
Reflexive property of congruence:
<em>Reflexive property of congruence means the geometric figure is congruent to itself.</em>
Option A: If 
From the definition of reflexive property, it is not true.
This is transitive property of congruence triangles.
Therefore it is false.
Option B: 
From the definition of reflexive property, it is not true.
Therefore it is false.
Option C: 
From the definition of reflexive property, it is not true.
Therefore it is false.
Option D: 
Here, ΔKLM is congruent to itself.
This statement illustrates the reflexive property of congruence for triangles.
Therefore, it is true.
Hence option D is the correct answer.
The answer is: " 2x¹⁶ y " .
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This is the "most simplified" version of the expression given.
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Explanation:
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Given: "2xy (x⁵)³ " ; Simplify .
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Note: (x ⁵) ³ = x⁽ ⁵ * ³ ⁾ = x ⁽¹⁵⁾ ;
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Rewrite:
2xy (x⁵)³ = 2xy x⁽¹⁵⁾ ;
Rewrite:
2 * x * x⁽¹⁵⁾ * y ;
Note: "x * x⁽¹⁵⁾ = x¹ * x¹⁵ = x⁽¹ ⁺ ¹⁵⁾ = x¹⁶ ;
Rewrite: " 2x¹⁶ y " .
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49b^2 -36 = (7b -6)(7b +6)
so because there you missed some signs in these wrote choices
hope helped
Put each number that is given in the set into the inequality and see how many of them make the inequality a true statement. That is your answer.