
Revisão II trimestre
Authored by Eliú Oliveira
Mathematics
8th - 10th Grade
Used 3+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Os coeficientes da equação , são:
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quais das equações são do 2° grau:
N.D.A
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Analise as afirmações abaixo:
I) Em toda equação do 2° grau temos que o coeficiente a deve ser diferente de zero;
II) Uma equação do 2° grau é incompleta quando os coeficientes b e c são iguais a zero;
As afirmações verdadeiras são:
I e II são verdadeiras
Apenas I é verdadeira
Apenas II é verdadeira
Nenhuma;
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Dois homens lavam 8 carros trabalhando 6 horas por dia. Se forem contratados mais dois homens que trabalham com a mesma agilidade dos dois trabalhadores mais antigos, quantos carros eles conseguirão lavar trabalhando 5 horas por dia?
10 carros
13 carros
8 carros
12 carros
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
As medidas de comprimento e largura de um retângulo são respectivamente (x+y-1) e (x+y+1)
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Quais são as raízes da equação
?
-10 e +10
-10 e 16
-16 e 16
-16 e 10
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Força (F) necessária para mover um objeto de Massa (m) com uma Aceleração (a) é expressa através da fórmula . Sabendo disso, responda qual a força aplicada ao chutar uma bola de futebol de 0,45 Kg provocando uma aceleração de 20 ?
90N
0,9N
4,5N
9N
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