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Authored by Tutoria Exata
Mathematics
10th Grade
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10 questions
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1.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Os números reais x y que satisfazem a equação abaixo são:
(3, -2)
(5, 7)
(2, 1)
(3, -1)
(1, 2)
2.
FILL IN THE BLANK QUESTION
10 mins • 1 pt
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Considere as matrizes A2x4 e B5x2. Assinale a alternativa correta:
O produto AB resulta numa matriz de dimensão 2x2.
O produto BA resulta numa matriz de dimensão 4x2
O produto BA não existe
O produto AB é a matriz identidade I2
O produto AB não existe
4.
FILL IN THE BLANK QUESTION
10 mins • 1 pt
Dadas as matrizes . Escreva a matriz M tal que M = 3A – Bt
5.
FILL IN THE BLANK QUESTION
10 mins • 1 pt
Calcule o determinante pela regra de Sarrus.
6.
FILL IN THE BLANK QUESTION
10 mins • 1 pt
7.
FILL IN THE BLANK QUESTION
10 mins • 1 pt
Matheus tem um total de R$ 115,00 em notas de R$ 5,00 e de R$ 20,00. Considerando que ele possui um total de 11 cédulas, a quantidade de notas de R$ 5,00 que ele possui a mais que as de R$ 20,00 é igual a:
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