
Repaso M1
Authored by JOSÉ SEPÚLVEDA
Mathematics
12th Grade
Used 8+ times

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17 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Dados los pesos de 10 niños : 42 kg, 38 kg, 46 kg, 40 kg, 43 kg, 48 kg, 45 kg, 43 kg, 41 kg y 39 kg. ¿Cuál(es) de las afirmaciones siguientes es(son) verdadera(s) ? I) La moda de la distribución es 43 kg. II) El promedio es menor que 43 kg. III) La mediana coincide con la moda.
I y III
II y III
I y II
Todas
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
El gráfico de la figura 1, representa las notas obtenidas por 15 niños en una prueba. ¿Cuál(es) de las siguientes aseveraciones es(son) verdadera(s) ? I) La mediana es 5. II) La moda es 5. III) La media aritmética (promedio) es 4,7.
I y II
I y III
II y III
Todas
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Veinte números tienen un promedio de 20; doce de los números tienen un promedio de 8. ¿Cuál es el promedio de los otros ocho números ?
12
38
62
28
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Al sumar el cuarto y el quinto término de la secuencia: x - 5, 2(2x + 7), 3(3x - 9), 4(4x + 11), . . . , resulta
41x - 21
41x + 109
41x - 109
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Los cajones M y S pesan juntos K kilogramos. Si la razón entre los pesos de M y S es 3 : 4, entonces S : K =
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Un vendedor recibe un sueldo base de $ 215.000, al mes, más un 8% de las ventas por comisión. ¿Cuánto debe vender para ganar $ 317.000 en el mes ?
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