0.65 amplitude = how many decibels?? help pls i want a siren but theres no details on decibels

Rename mixed numbers before you can subtract are what

If anyone has done the algebra 2 chaos theory portfolio would you be wiling to me? i kind of know what i'm doing i just don't know if i'm doing it right.

Ammonia molecules have three hydrogen atoms and one nitrogen atom.how many of each atom arein five molecules of ammonia