
CUESTIONARIO 8
Quiz
•
Mathematics
•
8th Grade
•
Practice Problem
•
Medium
Silvana AlvareZ
Used 17+ times
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23 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Al resolver
70
-70
50
-50
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Al resolver
39 : ( - 3)
-13
13
12
-12
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
¿Cuál es el resultado de (–96) : (–4) ?
-24
-21
21
24
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Cuál es el valor de ?
4
8
32
256
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
¿Cuál es el valor de ?
6
18
72
1296
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
La temperatura de un congelador bajó de 3 °C a –9 °C en 3 horas. Si la temperatura del congelador bajó en la misma cantidad de grados cada hora, ¿qué temperatura tenía el congelador al completarse la primera hora?
1°C
0°C
-1°C
-2°C
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Los globos aerostáticos, como los de la siguiente imagen, funcionan por medio de un mecanismo de aire caliente que se activa para elevarlos y se desactiva para que desciendan.
Uno de estos globos se encontraba a 250 metros de altura cuando se desactivó su mecanismo de aire caliente.
A partir de ese momento, el globo comenzó a descender 4 metros de altura (–4 m) por cada segundo. ¿Cuál de las siguientes expresiones corresponde a la altura, en metros, a la que se encontrará el globo tras 40 segundos de descenso?
250 + 40 : (–4)
250 – (–4) : 4
250 + (–4) ⦁ 40
250 – (–4) ⦁ 40
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