Potenciação e Radiciação

Potenciação e Radiciação

9th Grade

15 Qs

quiz-placeholder

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Potenciação e Radiciação

Potenciação e Radiciação

Assessment

Quiz

Mathematics

9th Grade

Hard

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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 123 + 27 312\sqrt{3}\ +\ \sqrt{27}\ -\sqrt{3}  é igual a:

 122712\sqrt{27}  

 14314\sqrt{3}  

 15315\sqrt{3}  

 11311\sqrt{3}  

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

O produto de  a5. a3a^5.\ a^3 é igual: 

 2a2a  

 3a23a^2  

 2a82a^8  

 a8a^8  

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Quanto mede o perímetro de um triângulo, cujos lados medem 18cm, 52cm e 8cm ?\sqrt{18}cm,\ 5\sqrt{2}cm\ e\ \sqrt{8}cm\ ?  

 528cm5\sqrt{28}cm  

 102cm10\sqrt{2}cm  

 710 cm7\sqrt{10}\ cm  

 182 cm18\sqrt{2}\ cm  

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

O resultado de  (53)2\left(5\sqrt{3}\right)^2  representa que quantia?

13 reais

15 reais

25 reais

75 reais

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Quanto mede a área de um retângulo com  (5+2)cm\left(5+\sqrt{2}\right)cm de altura e  (52)cm\left(5-\sqrt{2}\right)cm de base?   

 23cm223cm^2   

 21cm221cm^2  

 25cm225cm^2  

 20cm220cm^2  

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

O diâmetro de um fio de cabelo tem, em média 0,0004 m. Em notação científica é igual:

2 X 1032\ X\ 10^{-3}

4 X 1044\ X\ 10^{-4}

4 X 1024\ X\ 10^2

4 X 1054\ X\ 10^{-5}

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Qual das igualdades é verdadeira?

12 = 32\sqrt{12}\ =\ 3\sqrt{2}

23 = 162^3\ =\ 16

712 = 77^{\frac{1}{2}}\ =\ \sqrt{7}

72 = 147^2\ =\ 14

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