Sistemas de equações

Sistemas de equações

8th Grade

5 Qs

quiz-placeholder

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Sistemas de equações

Sistemas de equações

Assessment

Quiz

Mathematics

8th Grade

Practice Problem

Hard

Created by

margareth sikorski

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5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Qual é o valor de X e Y no sistema de equação abaixo?

2 x + Y = 20

-2x + 2Y = 4

X = 2, Y = 16

X = 6, Y = 8

X = 0, Y = 20
X = 4, Y = 12

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

O par ordenado que representa a solução do sistema é:

X+ 2Y = 9

2X - Y = -2

(1, 4)
(3, 0)
(0, 9)
(2, 3)

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

O par ordenado que representa a solução do sistema é :

X - Y =3

X + 2Y = 9

(4, 3)
(6, 1)
(5, 2)
(2, 5)

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Qual sistema de equações representa o problema a seguir:

Numa prova de 30 questoes , um aluno fez 20 pontos. Sabe-se que ele ganhava 3 pontos para cada resposta correta, e perdia 2 pontos para cada resposta errada.

X + Y = 20

3X+ 2Y = 30

X + Y = 30

3X - 2 Y = 20

X + Y = 30

3X + 2Y = 20

X + Y = 20

3X - 2Y = 30

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Em um sítio há porcos e galinhas, totalizando 86 animais. Sabendo, que a o todo, são 196 pernas, quantos porcos e quantas galinhas existem no sítio?

50 galinhas e 36 porcos
60 galinhas e 26 porcos
74 galinhas e 12 porcos
80 galinhas e 6 porcos

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