REC2 - 2° TRIMESTRE - 1 ANO EM
Quiz
•
Mathematics
•
1st Grade
•
Practice Problem
•
Hard
EVANDRO DE CRISTO
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10 questions
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1.
MULTIPLE SELECT QUESTION
1 min • 1 pt
ANALISANDO A TABELA PODEMOS DIZER QUE É UMA MATRIZ:
3X3
4X4
2X2
5X5
2.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Uma pesquisa da Associação Paulista de Supermercados apontou que 22% dos entrevistados optam por mercadinhos de bairro quando o assunto são compras do dia a dia.
Fui ao mercadinho e comprei 8 caixas de leite a R$ 4,50 cada, 4 latas de óleo a R$ 7,50 cada e 2 sabonetes a R$ 2,50 cada. Considerando x, y e z, respectivamente, os preços da caixa de leite, lata de óleo e sabonete e que o total da compra foi de R$ 71,00, marque a alternativa que apresenta a terna ordenada como solução da equação linear 8x +4y + 2z = 71.
(4,50; 7,50; 2,50)
(2,50; 7,50; 4,50)
(7,50; 4,50; 2,50)
(4,50; 2,50; 7,50)
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Determine a matriz quadrada A de segunda ordem tal que:
aij = 2i² - j²
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sejam as matrizes A = [12 1 9 5] , B = [8 11 3 6] e C = [2 4 10 7]
Determine a matriz resultado de A – (B + C)
[-2 -14 -4 -8]
[2 -14 -4 -8]
[-2 -14 -4 8]
[-2 10 -4 -8]
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Se multiplicarmos uma matriz quadrada de ordem 2 pelo número 2 obteremos:
uma matriz quadrada de ordem 4
uma matriz quadrada de ordem 2 onde todos os elementos da nova matriz representam a metade da matriz inicial
uma matriz quadrada de ordem 2 onde todos os elementos da nova matriz representam o dobro da matriz inicial
uma matriz de ordem 2 x 4
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
O sistema linear correspondente a matriz completa da figura ao lado corresponde:
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Resolva o sistema linear ao lado e marque a alternativa correta:
S = {(1, 2, 3)}
S = {(1, 3, 2)}
S = {(3, 2, 1)}
S = {(2, 3, 1)}
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