
Recuperação - Prova Paraná
Authored by RICARDO SANTANA
Mathematics
8th Grade
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8 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Resolva o sistema de equações lineares:
x=2y−1
3x+2y=17
x = 7 e y = 4
x = 3 e y = 2
x = 5 e y = 3
x = 4 e y = 2,5
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Resolva o sistema de equações lineares:
2x+y=7
4x−y=5
x = 2 e y = 3
x = 1 e y = 5
x = 4 e y = -1
x = 3 e y = 1
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Em uma lanchonete, a soma do preço de um sanduíche (S) e um suco (J) é de R$ 15,00. O sanduíche custa o dobro do suco. Qual o preço de cada item?
Sanduíche: R$ 5,00 e Suco: R$ 10,00
Sanduíche: R$ 10,00 e Suco: R$ 5,00
Sanduíche: R$ 9,00 e Suco: R$ 6,00
Sanduíche: R$ 8,00 e Suco: R$ 7,00
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
No monômio −5x³y², identifique o coeficiente numérico, a parte literal e o grau.
Coeficiente: 5, Parte Literal: x³y², Grau: 5
Coeficiente: −5, Parte Literal: xy, Grau: 3
Coeficiente: −5, Parte Literal: x³y², Grau: 5
Coeficiente: x³y², Parte Literal: −5, Grau: 5
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Simplifique a expressão 4a²b−7a²b+10a²b.
7a²b
7a⁶b³
7
a²b
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Calcule o produto de (3x²y)⋅(−2xy³)
−6x³y⁴
6x²y³
−6x²y³
x³y⁴
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
João e Maria foram a uma pizzaria e compraram pizzas de dois sabores diferentes: Calabresa e Muçarela.
⋅ João comprou 2 pizzas de Calabresa e 1 de Muçarela, gastando um total de R$ 70,00.
⋅ Maria comprou 1 pizza de Calabresa e 2 de Muçarela, gastando um total de R$ 80,00.
Se C representa o preço da pizza de Calabresa e M o preço da pizza de Muçarela, qual é o valor de cada pizza?
Calabresa: R$ 20,00 e Muçarela: R$ 30,00
Calabresa: R$ 30,00 e Muçarela: R$ 20,00
Calabresa: R$ 15,00 e Muçarela: R$ 40,00
Calabresa: R$ 25,00 e Muçarela: R$ 25,00
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