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zlopas [31]
3 years ago
14

Item 3: helppp, i need help asap :)

Mathematics
1 answer:
Ilia_Sergeevich [38]3 years ago
4 0
Since the 2 triangles are congruent (exactly the same), we know that side AD is the same as side AB. Since we know they are equal, you can write it as...
3y = 21
Divide both sides of the equation by 3 to solve for y, and you get y = 7.
The answer is A) 7*
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