Respuesta :

Triangle's interior is 180 degrees in total
[tex]100 + (4y + 25) + (3y + 20) = 180 \\ 100 + 4y + 25 + 3y + 20 = 180 \\ 145 + 7y = 180 \\ 7y = 35 \\ y = 5[/tex]
y = 5

Hope this helps.
aspena9227

Answer:

your answer will be 5

Explanation:

Igo to k-12 and its correct