Identify sin Y as a fraction and as a decimal rounded to the nearest hundredth. Help please!!

[tex]sine=\dfrac{opposite}{hypotenuse}[/tex]
We have
[tex]opposite7.4\\hypotenuse=10.9[/tex]
Substitute:
[tex]\large\boxed{\sin Y=\dfrac{7.4}{10.9}\approx0.68}[/tex]