En una prueba de aptitud académica se evaluaron a “n” estudiantes y las notas obtenidas se clasificaron en una tabla de distribución de frecuencias como se muestra a continuación. Marca de Clase 45 55 65 75 85 Frecuencias Relativas K/50 3k/100 2k/25 3k/50 /100 ¿Qué porcentaje de estudiantes obtuvieron una nota menor que 65 puntos o igual que 85 puntos?

Mary beth used the mapping rule to find the coordinates of a point that had been rotated 90° counterclockwise around the origin. examine the steps to determine whether she made an error. m (3, –6) is rotated 90° counterclockwise. (x, y) → (–y, x) 1. switch the x- and y-coordinates: (6, –3) 2. multiply the new x-coordinate by –1: (6(–1), –3) 3. simplify: (–6, –3) .

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

Write an expression that represent sarah’s total pay last week.represent her hourly wage with w monday 5 tuesday 3 wednesday 0 noah hours wednesday 8 only with w wage did noah and sarah earn the same amount last week?