Sara en el parque cada semana. a) compra b) corre c) nado d) escriben

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

Sabiendo que a y b son paralelas halla sus medidas

Fill in the blank with the spanish word that best completes the following sentence. no me nada. tengo todo. falta cocino bebo queso