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nadya68 [22]
3 years ago
13

The value of AD is: A. 27 B. 28 C. 26

Mathematics
1 answer:
kumpel [21]3 years ago
7 0

Answer:

27

Step-by-step explanation:

Angles ABD and DBC are congruent (they are marked as such in the diagram).  That means that the sides across from these angles are also congruent:  AD = CD.  Therefore, we set them equal to each other:

3x = 2x + 9 and

x = 9.

That means that 3x --> 3(9) = 27

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