Por que no me dan las respuestas en epañol no se ingles

Actividad 3 el dia de la boda 1. la novia un poco (preocupar) por su vestido. 2. las puertas de la iglesia (abrir). etc,

Achemist mixes 4 liters of one acid solution with 10 liters of a 40% solution, resulting in a 30% acid solution. what is the value of x, the acid concentration of the first solution

In your own life, what are the most important benefits of studying spanish? in other words, why are you studying it? write your response in english.