Question

Las calificaciones son 60; 57; 65; 49. ¿Cuál es la mínima calificación que se debe obtener para mantener un promedio mayor o igual a 57?

Answer 1

Respuesta:

Tiene que ser 54

Explicación paso a paso:

Para hallar el promedio de una nota se aplica el promedio aritmético

Sea x la nota mínima:

(60+57+65+49+X) ÷ 5 ≥ 57

231 + X ≥ 57×5

        X ≥ 285 - 231

       X ≥ 54

X para que sea mínimo tiene que ser 54

Answer 2

Respuesta:

(͡° ͜ʖ ͡°)(҂⌣̀_⌣́)(¬_¬)ﾉ͡° ͜ʖ ͡°

Explicación paso a paso:

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