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Ann [662]
3 years ago
14

Calificación mínima. Para obtener una A en un curso, Stephen Heasley debe

Mathematics
1 answer:
Snowcat [4.5K]3 years ago
3 0

Answer:

La mínima calificación que Stephen puede recibir en el quinto examen  para obtener una A en el curso es 98.

Step-by-step explanation:

La media (también llamada promedio o media aritmética) de un conjunto de datos es una medida de posición central. Es el valor obtenido al sumar todos los datos y dividir el resultado entre el número total de datos.

En este caso, el número total de datos es 5 y el valor de los datos de los cuales debes obtener el problema es 92, 87, 96, 77 y un valor desconocido de un quinto examen. Y sabes que este valor debe ser igual o mayor a 90.

Esto se expresa matemáticamente como:

\frac{92+87+96+77+nota}{5}≥90

donde "nota" es la mínima calificación que Stephen puede recibir en el quinto examen para obtener una A en el curso.

Resolviendo:

\frac{352+nota}{5}≥90

352+nota≥90*5

352+nota≥450

nota≥450 - 352

nota≥98

<u><em>La mínima calificación que Stephen puede recibir en el quinto examen  para obtener una A en el curso es 98.</em></u>

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