
Desafío Matemático de 9º Grado
Authored by Wendy Norabuena
Mathematics
9th Grade
Used 2+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Simplifica la expresión: 3x + 5x - 2.
3x + 2
5x - 2
8x - 2
8x + 2
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Resuelve el sistema de ecuaciones: 2x + 3y = 6 y x - y = 2.
(3, 1)
(0, 2)
(12/5, 2/5)
(2, 0)
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Calcula el seno de 30 grados.
1.0
0.25
0.75
0.5
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Simplifica el radical: √(50).
√(100/2)
10√5
5√2
2√25
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Calcula la suma de ángulos internos de un undecágono
1620°
4000°
1720°
780°
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Resuelve el producto notable: (a + b)².
a² + b²
2a + 2b
a² + 2b²
a² + 2ab + b²
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
49/41
49/9
41/9
50/41
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