How to respond to this situation in spanish. it is 9: 00. text your friend, greeting him/her and asking how he/she is

Calcula la concentracion de hidronio en la lluvia ácida si el ph es 4.35

Which system of linear inequalities is represented by thegraph? x-5ys-5 and ys-2x - 4 x + 5y > 5 and y s 2x + 4 x-5y < -5 and y < -2x + 4 x + 5y > 5 and y < 2x - 4

Frank is from atlanta and maria tuberto barbero is from ciudad de méxico. they became pen pals and communicate by phone because they love to talk in addition to communication through emails. based on what you learned , how would frankk dial maria’s phone numbers when he talks to her