Help i don’t know spanish !! i’ll
give you points

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

What is the affirmative tú commands of the verbs, (desayunar, comer, evitar, beber, pedir, comprar)

Necesitamos cantan bien correct or incorrect