
Trabalho de matemática
Authored by MURILO CESAR MUNHOS SILVA
Mathematics
8th Grade
Used 3+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Num estacionamento há carros e motos, totalizando 78 veículos. O número de carros é igual a 5 vezes o número de motos. O número de motos no estacionamento é:
65
13
55
11
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
O quíntuplo do número x adicionado com a metade de y é igual a 10 pode ser representado por
2x + y/5 = 10
3x - y/2 = 10
5x + y/2 = 10
x/5 + 2y = 10
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
N8 7º ano, há 44 alunos entre meninos e meninas. A diferença entre o número de meninos e o de meninas é 10.Qual é o sistema de equações do 1º grau que melhor representa essa situação?
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Considera o sistema de equações
Qual dos seguintes pares ordenados (a,b) é a solução deste sistema?
(0,-3)
(2,0)
(4,3)
(4,-1)
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Na promoção de uma loja, uma calça e uma camiseta custam juntas R$ 55,00. Comprei 3 calças e 2 camisetas, pagando o total de R$ 140,00. O preço de cada calça e cada camiseta, respectivamente, é:
R$ 35,00 e R$ 20,00
R$ 25,00 e R$ 30,00
R$ 30,00 e R$ 25,00
R$ 35,00 e R$ 35,00
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