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Três amigos Samuel, Vitória e Júlia, foram a uma lanchonete.
• Samuel tomou 1 guaraná, comeu 2 esfirras e pagou 5 reais.
• Vitória tomou 2 guaranás, comeu 1 esfirra e pagou 4 reais.
• Júlia tomou 2 guaranás, comeu 2 esfirras e pagou k reais.
Considerando-se que cada um dos três pagou o valor exato
do que consumiu, é correto afirmar que
Considere que:
I) em uma urna encontram-se p bolas vermelhas e q bolas azuis;
II) duas bolas são retiradas dessa urna, sucessivamente e com reposição.
Sabe-se que x é a variável que indica o número de bolas azuis observadas com as retiradas, cuja distribuição de probabilidade está de acordo com a tabela a seguir.
Nessas condições, é correto afirmar que
Sendo 
, o valor de 
é
Um colecionador deixou sua casa provido de R$ 5,00, disposto a gastar tudo na loja de miniaturas da esquina. O vendedor lhe mostrou três opções que havia na loja, conforme a seguir.
• 5 diferentes miniaturas de carros, custando R$ 4,00 cada miniatura;
• 3 diferentes miniaturas de livros, custando R$ 1,00 cada miniatura;
• 2 diferentes miniaturas de bichos, custando R$ 3,00 cada miniatura.
O número de diferentes maneiras desse colecionador
efetuar a compra das miniaturas, gastando todo o seu
dinheiro, é
Sobre o polinômio A(x) , expresso pelo determinante da matriz 
, é INCORRETO afirmar que
De um dos lados de uma avenida retilínea, estão dispostos alguns postes nos ponto P1, P2, ..., Pi, i ∈ |N
Do outro lado dessa mesma avenida, estão dispostas algumas árvores nos pontos A1, A2, ..., Aj, j∈ |N
Sabe-se que:
Com base nessas informações, é correto afirmar que a
maior distância entre duas árvores consecutivas é, em dam,
igual a
O número complexo z = a + bi é vértice de um triângulo equilátero, como mostra a figura abaixo.
É correto afirmar que o conjugado de z2
tem afixo que
pertence ao
Se 
, então
Did you know?
... some interesting facts about African Wildlife
Four of the five fastest land animals live in Africa – the cheetah (70mph), wildebeest, lion and Thomson’s gazelle (all about 50 mph).
Butterfly
Having a wingspan of only 1/2”, the smallest butterfly in the world is found in South Africa. It is known as the Dwarf Blue Butterfly.
Chameleons
Madagascar is the home of the world’s _________ as well as the _______ chameleons!
Elephants
The African elephant is the largest living land mammal.
An elephant can weigh up to 6-7 tons and has no natural enemies for he is not a predator and there is no other animal large enough to challenge him.
Did you know elephants drink up to 160 liters of water per day?
An African elephant possesses such “manual” dexterity in his/her trunk tip that he/she can actually turn the pages of a book with it.
Fish
The only place are found is in Lake Tanganyika.
Giraffes
Did you know that the tongue of a giraffe can be ______________ 45 cm? Giraffes are 6 ft tall when they are born.
Penguins
South Africa has a penguin colony, which thrives thanks to the cold Antarctic currents on the west coast near the Cape.
Adapted from Google/ The African Guide
GLOSSARY:
Dexterity – the ability to perform a difficult action quickly with the hands.
Trunk – an elephant’s nose.
Did you know?
... some interesting facts about African Wildlife
Four of the five fastest land animals live in Africa – the cheetah (70mph), wildebeest, lion and Thomson’s gazelle (all about 50 mph).
Butterfly
Having a wingspan of only 1/2”, the smallest butterfly in the world is found in South Africa. It is known as the Dwarf Blue Butterfly.
Chameleons
Madagascar is the home of the world’s _________ as well as the _______ chameleons!
Elephants
The African elephant is the largest living land mammal.
An elephant can weigh up to 6-7 tons and has no natural enemies for he is not a predator and there is no other animal large enough to challenge him.
Did you know elephants drink up to 160 liters of water per day?
An African elephant possesses such “manual” dexterity in his/her trunk tip that he/she can actually turn the pages of a book with it.
Fish
The only place are found is in Lake Tanganyika.
Giraffes
Did you know that the tongue of a giraffe can be ______________ 45 cm? Giraffes are 6 ft tall when they are born.
Penguins
South Africa has a penguin colony, which thrives thanks to the cold Antarctic currents on the west coast near the Cape.
Adapted from Google/ The African Guide
GLOSSARY:
Dexterity – the ability to perform a difficult action quickly with the hands.
Trunk – an elephant’s nose.
Did you know?
... some interesting facts about African Wildlife
Four of the five fastest land animals live in Africa – the cheetah (70mph), wildebeest, lion and Thomson’s gazelle (all about 50 mph).
Butterfly
Having a wingspan of only 1/2”, the smallest butterfly in the world is found in South Africa. It is known as the Dwarf Blue Butterfly.
Chameleons
Madagascar is the home of the world’s _________ as well as the _______ chameleons!
Elephants
The African elephant is the largest living land mammal.
An elephant can weigh up to 6-7 tons and has no natural enemies for he is not a predator and there is no other animal large enough to challenge him.
Did you know elephants drink up to 160 liters of water per day?
An African elephant possesses such “manual” dexterity in his/her trunk tip that he/she can actually turn the pages of a book with it.
Fish
The only place are found is in Lake Tanganyika.
Giraffes
Did you know that the tongue of a giraffe can be ______________ 45 cm? Giraffes are 6 ft tall when they are born.
Penguins
South Africa has a penguin colony, which thrives thanks to the cold Antarctic currents on the west coast near the Cape.
Adapted from Google/ The African Guide
GLOSSARY:
Dexterity – the ability to perform a difficult action quickly with the hands.
Trunk – an elephant’s nose.
The statement below shows another information about African wildlife. Read it and then choose the alternative to complete the gap.
Fish
The only place _______ are found is in Lake Tanganyika.
Did you know?
... some interesting facts about African Wildlife
Four of the five fastest land animals live in Africa – the cheetah (70mph), wildebeest, lion and Thomson’s gazelle (all about 50 mph).
Butterfly
Having a wingspan of only 1/2”, the smallest butterfly in the world is found in South Africa. It is known as the Dwarf Blue Butterfly.
Chameleons
Madagascar is the home of the world’s _________ as well as the _______ chameleons!
Elephants
The African elephant is the largest living land mammal.
An elephant can weigh up to 6-7 tons and has no natural enemies for he is not a predator and there is no other animal large enough to challenge him.
Did you know elephants drink up to 160 liters of water per day?
An African elephant possesses such “manual” dexterity in his/her trunk tip that he/she can actually turn the pages of a book with it.
Fish
The only place are found is in Lake Tanganyika.
Giraffes
Did you know that the tongue of a giraffe can be ______________ 45 cm? Giraffes are 6 ft tall when they are born.
Penguins
South Africa has a penguin colony, which thrives thanks to the cold Antarctic currents on the west coast near the Cape.
Adapted from Google/ The African Guide
GLOSSARY:
Dexterity – the ability to perform a difficult action quickly with the hands.
Trunk – an elephant’s nose.
Religion ________ central to people's lives in Africa. Although the majority of Africans are now Muslim or Christian, traditional religions have endured and still play a big role. Religion runs like a thread through daily life, marked by prayers of gratitude in times of plenty and prayers of supplication in times of need. Religion confirms identity on the individual and the group.
http://www.bbc.co.uk/worldservice/africa/features/storyofafrica
GLOSSARY:
Endure – to continue to exist for a long time
Thread – one part connecting with another
Religion ________ central to people's lives in Africa. Although the majority of Africans are now Muslim or Christian, traditional religions have endured and still play a big role. Religion runs like a thread through daily life, marked by prayers of gratitude in times of plenty and prayers of supplication in times of need. Religion confirms identity on the individual and the group.
http://www.bbc.co.uk/worldservice/africa/features/storyofafrica
GLOSSARY:
Endure – to continue to exist for a long time
Thread – one part connecting with another
Mark the correct option to complete the passage.
The last sentence of the paragraph means that identity on the individual and the group _______ by religion.
Religion ________ central to people's lives in Africa. Although the majority of Africans are now Muslim or Christian, traditional religions have endured and still play a big role. Religion runs like a thread through daily life, marked by prayers of gratitude in times of plenty and prayers of supplication in times of need. Religion confirms identity on the individual and the group.
http://www.bbc.co.uk/worldservice/africa/features/storyofafrica
GLOSSARY:
Endure – to continue to exist for a long time
Thread – one part connecting with another
Religion ________ central to people's lives in Africa. Although the majority of Africans are now Muslim or Christian, traditional religions have endured and still play a big role. Religion runs like a thread through daily life, marked by prayers of gratitude in times of plenty and prayers of supplication in times of need. Religion confirms identity on the individual and the group.
http://www.bbc.co.uk/worldservice/africa/features/storyofafrica
GLOSSARY:
Endure – to continue to exist for a long time
Thread – one part connecting with another
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