Respuesta :

Answer:

42°

Step-by-step explanation:

[tex] \triangle ABC\cong\triangle TUV.. (given) [/tex]

[tex] \therefore \angle B\cong\angle U[/tex]

[tex] \therefore m\angle B=m\angle U[/tex]

Therefore,

(2y + 2)° = (3y - 18)°

2y + 2 = 3y - 18

2y - 3y = - 2 - 18

-y = - 20

y = 20

[tex] m\angle U=(3y-18)\degree [/tex]

[tex] m\angle U=(3\times 20-18)\degree [/tex]

[tex] m\angle U=(60-18)\degree [/tex]

[tex] m\angle U=42\degree [/tex]

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