
Custionario Matematica
Authored by Katerine Franco Segovia
Mathematics
12th Grade
Used 1+ times

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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Un mecánico se compromete a realizar una obra en $ 600 y ya ha cobrado una cantidad equivalente a 11 / 15 del total. Cuánto dinero le falta por cobrar.
a. $160
b. $360
c. $440
d. $220
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Un examen de admisión tiene 140 preguntas y dura 3 horas. Si un postulante dedica 60 minutos en leer y responder 40 preguntas y de cada 10, acierta 5, ¿Cuántos no acertó o dejó de responder?
a. 20
b. 40
c. 60
d. 80
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Una llave llena un reservorio en 6 horas y otro lo vacía en 10 horas, ¿en qué tiempo se llenará el reservorio si se abren las dos llaves simultáneamente?
a. 15h
b. 20h
c. 22h
d. 25h
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El perímetro del aula de clase es de 200 m y su largo es tres veces el ancho. Determine las dimensiones del rectángulo.
a. a=25m; l=75m
b. a=20m; l=60m
c. a=30m; l=90m
d. a=35m; l=105m
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En la ecuación 2x2-5x+6=0 el valor de b es:
a. 5
b. -5
c. 2
d. 6
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Si el discriminante de una ecuación de segundo grado es mayor que cero se obtienen raíces:
a. Dos raíces reales e iguales
b. Dos raíces imaginarias
c. Dos raíces reales y diferentes
d. No se puede determinar
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dada la función y=-2x+3; la pendiente y la intersección con el eje y es:
a. m=2; b=3
b. m=-2; b=3
c. m=2; b=-3
d. m=-2; b=-3
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