CEDECENTER SEMANA 11

CEDECENTER SEMANA 11

1st - 3rd Grade

18 Qs

quiz-placeholder

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CEDECENTER SEMANA 11

CEDECENTER SEMANA 11

Assessment

Quiz

Mathematics, Physics, Chemistry

1st - 3rd Grade

Hard

Created by

Lenin Romero

Used 3+ times

FREE Resource

18 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

La fórmula para hallar la suma de los  nn   primeros números naturales es:

 (n)(n+1)2\frac{\left(n\right)\left(n+1\right)}{2}  

 (n)(n1)2\frac{\left(n\right)\left(n-1\right)}{2}  

 (n+1)(n1)2\frac{\left(n+1\right)\left(n-1\right)}{2}  

 (n2)(n+1)2\frac{\left(n^2\right)\left(n+1\right)}{2}  

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

La fórmula para hallar la suma de los cuadrados de los  nn   primeros números naturales es:

 (n)(n+1)(2n+1)6\frac{\left(n\right)\left(n+1\right)\left(2n+1\right)}{6}  

 (n)(n1)(2n1)6\frac{\left(n\right)\left(n-1\right)\left(2n-1\right)}{6}  

 (n+1)(n1)(2n+1)6\frac{\left(n+1\right)\left(n-1\right)\left(2n+1\right)}{6}  

 (n2)(n+1)(2n+1)6\frac{\left(n^2\right)\left(n+1\right)\left(2n+1\right)}{6}  

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

El resultado de i=15i2\sum_{i=1}^5\frac{i}{2}   es:

 66  

 6.56.5  

 77  

 7.57.5  

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

La fórmula i=1ni3\sum_{i=1}^ni^3   es equivalente a:

 (n)2(n+1)24\frac{\left(n\right)^2\left(n+1\right)^2}{4}  

 (n)(n+1)24\frac{\left(n\right)\left(n+1\right)^2}{4}  

 (n)2(n+1)4\frac{\left(n\right)^2\left(n+1\right)}{4}  

 (n)(n+1)4\frac{\left(n\right)\left(n+1\right)}{4}  

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

La fórmula i=1101i\sum_{i=1}^{10}\frac{1}{i}   es equivalente a:

 1+2+3+...+101+2+3+...+10  

 1+12+13+...+1101+\frac{1}{2}+\frac{1}{3}+...+\frac{1}{10}  

 1+12+13+1101+\frac{1}{2}+\frac{1}{3}+\frac{1}{10}  

 1+2+3+101+2+3+10  

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Desde un punto distante 8 cm. del centro de una circunferencia se ha trazado a ésta una

tangente de 4 cm de longitud. Determinar la medida del diámetro de la circunferencia.

48cm48cm

43cm4\sqrt{3}cm

23cm2\sqrt{3}cm

83cm8\sqrt{3}cm

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Dos cuerdas (una horizontal y otra vertical) son trazadas en una circunferencia, interceptándose en un punto P. Los extremos de la cuerda vertical son A y B, y los de la horizontal son C y D. La distancia superior de la cuerda vertical mide 7 cm, mientras que la distancia de lado izquierdo de la cuerda horizontal mide 4 cm. Si la cuerda vertical mide 9 cm, la cuerda horizontal mide:

3.5cm3.5cm

5.5cm5.5cm

7.5cm7.5cm

9.5cm9.5cm

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