Matemática para Negócios

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  Fechar Avaliação:  GST0573_AV_201303015315 » MATEMÁTICA PARA NEGÓCIOS Tipo de Avaliação:  AV Aluno:  201303015315 - ANA PAULA DOS SANTOS Professor: MARCONE SOARES DA SILVA Turma:  9013/AC Nota da Prova:  4,8          Nota de Partic.:  1,2          Data:  19/06/2015 09:07:03   R0lGODlhEwAQALMAANzm8RUrhTxbrpKr3MPS7bbJ4Nzm9VR0v8/c8QUQXi1KogAAAAAAAAAAAAAA
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 1 a  Questão   (Ref.: 201303618769) Pontos:   0,8   /  1,5 Dado os seguintes conjuntos: A = {1, 2, 3, 4, 5, 7};  B = { 2, 4, 6, 8}. Obtenha:    a) A    B   b) A    B     Resposta:  A) {1,2,3,4,5,6,7,8} B) {2,4} Gabarito: Solução A = {1,  2 , 3,  4 , 5, 7};  B = {  2 ,  4 , 6, 8}.   a) A    B  = {2, 4}   b) A    B = {1, 2, 3, 4, 5, 6, 7, 8}   2 a  Questão   (Ref.: 201303660117) Pontos:   0,0   /  1,5 Como saber se uma equação de primeiro grau é crescente ou decrescente? Resposta: Gabarito:  Se o sinal de x for positivo ela será crescente se for negativo ela será decrescente.  y= 3x + 4 é crescente  y = -10x + 2 é decrescente   3 a  Questão   (Ref.: 201303236681) Pontos:   0,0   /  0,5 Dados os conjuntos A = {1, 3, 5, 7}, B = {0, 1, 2, 3, 4} e C = { 1, 2, 5 }.  O conjunto  ( B U C) possui: R0lGODlhDAAMAJEAAP///xhRhAAAAAAAACH5BAAAAAAALAAAAAAMAAwAAAIgjI8Hy20rBJTggTiX
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AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACH5
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 3 elementos. R0lGODlhDAAMAIAAABhRhAAAACH5BAEAAAEALAAAAAAMAAwAAAIXhI8Xy20Nw4tsUgnuspRHD4FO
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 4 elementos.   R0lGODlhCwALAJECAGb/ADNmAP///wAAACH5BAEAAAIALAAAAAALAAsAAAIYlI+pKxEcAHjGNTmr
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 6 elementos. 2 elementos. 5 elementos.   4 a  Questão   (Ref.: 201303245021) Pontos:   0,5   /  0,5 Fatore a expressão 9x 2  - 4y 2 (x +2y) (x - 2y)   (3x +2y) (3x - 2y) (3x + y) (3x - y) (x - 2y) (x - 2y) (x +y) (x - y)   5 a  Questão   (Ref.: 201303247102) Pontos:   0,5   /  0,5 Num determinado dia comprei 1kg de café e 1kg de açúcar por R$10 e num outro dia comprei 2kg de café e 3kg de açúcar por R$22. Sabendo-se que nesses dias os preços do café e do açúcar não alteraram: O preço do kg do café é R$2 e o preço do kg do açúcar R$8 O preço do kg do café é R$7 e o preço do kg do açúcar R$3 O preço do kg do café é R$3 e o preço do kg do açúcar R$7   O preço do kg do café é R$8 e o preço do kg do açúcar R$2 O preço do kg do café é R$6 e o preço do kg do açúcar R$4   6 a  Questão   (Ref.: 201303599451) Pontos:   0,5   /  0,5 Pedro trabalha como animador de festa e cobra uma taxa fixa de R$ 300,00 , mais R$ 60,00 por hora, para animar uma festa. João, na mesma função cobra uma taxa fixa de R$ 165,00 e mais R$ 105,00 por hora. O tempo máximo de duração de festa, para que a contratação de João não fique mais cara a do Pedro, é: 6 horas   3 horas 4 horas
5 horas 7 horas   7 a  Questão   (Ref.: 201303246790) Pontos:   0,5   /  0,5 Para produzir x pecas de um produto, uma empresa tem um custo que é composto de um valor fixo de R$ 20.000,00 e um custo de R$30,00 por unidade produzida. Se o custo total da produção foi de R$ 23.600,00, pode-se dizer que quantidade de peças produzidas foi de: 110 140 130 100   120   8 a  Questão   (Ref.: 201303587414) Pontos:   0,0   /  0,5 Tomando por base o estudo dos sinais da função  y = - 2x + 5  podemos afirmar que: y < 0 para x > 2/5   y > 0 para x < 5/2 y < 0 para x > 1/2   y > 0 para x > 5/4 y > 0 para x < 7/2   9 a  Questão   (Ref.: 201303201057) Pontos:   1,0   /  1,0 Você precisa de um profissional que faça reparos hidráulicos e um amigo indica o senhor Teobaldo, conceituado bombeiro hidráulico de sua localidade. O valor total cobrado pelo senhor Teobaldo, inclui uma parte fixa, como visita técnica, no valor de R$90,00 e outra, no valor de R$25,00 por hora trabalhada. Quanto o senhor Teobaldo receberá, se fizer o serviço em 12 horas?   390,00 370,00 372,00 320,00 300,00   10 a  Questão   (Ref.: 201303680382) Pontos:   1,0   /  1,0 Quando x se aproxima do ponto x = 5, o valor da função y = 5x - 1 se aproxima de: 23 19   24 29 12 Observação:  Eu, ANA PAULA DOS SANTOS, estou ciente de que ainda existe(m) 1 questão(ões) não respondida(s) ou salva(s) no sistema, e que mesmo assim desejo finalizar DEFINITIVAMENTE a avaliação. Data: 19/06/2015 09:13:24