Properly "¿Cómo está tu madre?" and means "How is your mother?"
Cómo estás tu madre = "how is your mother"
¡Hola! Estoy aquí para responder tus preguntas. ¿En qué puedo ayudarte hoy?
"¿Cómo es tu madre?" means "How is your mother?" in Spanish. It is a common way to ask about someone's mother's well-being or to inquire about her personality or characteristics.
como estas - how are you? and if someone asked you como estas, you would answer such as "bien(good), y tu(and you)?"
Como estas tu hermano?
IT CAN BE TRANSLATED TO ENGLISH AS FOLLOWED. How are you my friend?
It is a nonsense sentence that translates to: I am a your friend and how are you?
"como to estas entose" doesn't really means anything!... maybe you meant "cómo estás tu entonces?" which means something like "so, how are you doing?"
Como estas tu exams?
Bien et tu - well and you
This phrase translates to "I am fine, sweetheart, and how are you?" in English. It shows concern for the well-being of the other person while also expressing one's own current state of being okay.
Translated to: "I am well, how are you, what are you doing?"
Bien, y ¿tu como estas?