CONCURSO VIRTUAL "ACADEMIA INGENIERIA" - AREA 2

Quiz
•
Mathematics
•
1st - 12th Grade
•
Hard
Jose Cáceres
Used 43+ times
FREE Resource
12 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Carlos y Enrique son dos obreros cuyas eficiencias en el trabajo son inversamente proporcionales. Si la eficiencia de Carlos disminuye en 2/5, ¿en cuánto aumenta o disminuye la eficiencia de Enrique?
Aumenta en 1/2
Aumenta en 5/3
Disminuye en 2/3
Disminuye en 5/3
Aumenta en 2/3
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
112
128
81
118
139
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
En un salón de clases, el profesor dicta una ecuación cuadrática en “x” a sus estudiantes. Uno de ellos se equivoca, en el término independiente y obtiene como raíces 7 y 3. Otro se equivoca en el coeficiente del término lineal y obtiene como raíces -8 y -2. ¿Cuál es la ecuación dicta?
x2 + 10x +21 = 0
x2 - 10x -21 = 0
x2 - 10x +16 = 0
x2 + 10x -16 = 0
x2 + 10x +8 = 0
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Si se cumple: x2 + x + 1 = 0, hallar: x31 + x-10
2
1
-1
3
10
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Una habitación prefabricada contiene columnas donde DH = CG = 4m, AE = BF = 6m y la base EH mide 6m. ¿Cuánto mide el ángulo diedro DC?
108,5 °
116,5°
127°
143°
104°
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Calcula: sec2(arctg3) + csc2(arcctg5)
34
36
28
8
24
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
3 A
10 A
15 A
4 A
2 A
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