
Simulado 8º Ano - 2
Mathematics
8th Grade

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quais são, respectivamente, os valores de x–4 para x=1, x=2 e x =–1?
-3; -2; -5
-3; 2; -6
-7; -4; 5
7; -4; 5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O valor em reais de uma corrida de táxi é dado por 12,20+6x, onde x representa a quantidade de quilômetros rodados. Se uma pessoa anda 5 quilômetros, quanto ela paga pela corrida?
R$40,20
R$42,20
R$18,20
R$32,20
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Na equação x–y=5, o ponto em que a reta corta o eixo x é:
(0, 5)
(0, -5)
(-5, 0)
(5, 0)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O par ordenado (2, 1) é solução de qual dos sistemas a seguir?
x+y=3
2x-y-4
x=3-y
2x+y=4
x+y=3
2x+y=5
x-y=3
2x+y=5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual dos pontos abaixo não pertence à reta da equação 3x–5y=-2?
(1, 0)
(1, 1)
(0, 1)
(1, -1)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Com a resolução da equação 3x²=27 , encontramos como solução:
Dois números consecutivos
Dois números opostos
Dois números pares opostos
Dois números iguais
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual a solução do sistema ao lado?
(2, -2)
(2, 2)
(-2, 2)
(-2, -2)
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