
Exercícios sobre reta numérica e sistemas lineares
Authored by EVANDRO SANTOS
Mathematics
9th Grade
Used 6+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A
B
C
D
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A reta numérica está dividida em partes iguais e é formada por vários pontos que correspondem a números reais. O ponto que melhor representa a posição aproximada do número 1,2 é
A
B
C
D
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dada a reta numérica, qual letra representa o ponto -1/4?
X
Y
Z
W
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dado o sistema, indique a matriz que o representa:
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dada a matriz, qual alternativa representa o sistema de equações?
{ 2x - 7y = -2 x + y = 5 }
{ 2x - 7y = -2 x + y = 5 }
{ 2x - 7y = -2 y = 5 }
{ 2x - 7y = -2 x = 5 }
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A leitura no sensor que indica 17,75°C apresenta
três algarismos corretos e um duvidoso.
três algarismos duvidosos e um correto.
dois algarismos corretos e um duvidoso.
três algarismos significativos e um duvidoso.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Uma variação de aproximadamente 3 bilhões de quilômetros. Em notação científica, tal variação pode ser escrita por
3 · 10¹² quilômetros.
3 · 10⁹ quilômetros.
3 · 10⁶ quilômetros.
3 · 10⁻⁹ quilômetros.
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