
PRÁCTICA #09 - III
Authored by Héctor Aldo Sucasaca Sarmiento
Mathematics
2nd Grade
Used 2+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 2 pts
1) Si 2x + 3y = 14 y 3x + 2y = 16, ¿cuál es el valor de x + y?
a) 5
b) 6
c) 7
d) 8
2.
MULTIPLE CHOICE QUESTION
3 mins • 2 pts
2) En un triángulo, el ángulo exterior mide 120° y uno de sus ángulos interiores mide 40°. ¿Cuál es el valor del otro ángulo interior?
a) 30°
b) 40°
c) 60°
d) 80°
3.
MULTIPLE CHOICE QUESTION
3 mins • 2 pts
3) La probabilidad de que ocurra un evento A es 0.3 y la de que ocurra el evento B es 0.4. Si son eventos independientes, ¿cuál es la probabilidad de que ocurran ambos?
a) 0.12
b) 0.25
c) 0.3
d) 0.7
4.
MULTIPLE CHOICE QUESTION
3 mins • 2 pts
4) Si el área de un círculo es 64π, ¿cuál es su radio?
a) 4
b) 8
c) 16
d) 32
5.
MULTIPLE CHOICE QUESTION
3 mins • 2 pts
5) La media de los números 10; 15; 20; x y 30 es 20. ¿Cuál es el valor de x?
a) 20
b) 25
c) 30
d) 35
6.
MULTIPLE CHOICE QUESTION
3 mins • 2 pts
6) Si la base de un triángulo es 10 cm y su área es 60 cm², ¿cuál es su altura?
a) 6 cm
b) 10 cm
c) 12 cm
d) 15 cm
7.
MULTIPLE CHOICE QUESTION
3 mins • 2 pts
7) Simplifica: (4x3y2)2 ÷ (2x2y)
a) 4x4y3
b) 8x4y3
c) 16x4y3
d) 16x6y3
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