Todas as tarefas
The turning points
Now, let's turn our attention to the corners, the turning points, alternating bottom-left, top-left, top-right and bottom-right, beginning with 1, 2, 3, 5, 7...
# Operations with natural numbers
Reasoning
5
Equivalent expressions
Which of the following expressions is equivalent to 3k+6?
# Numbers & operations
Reasoning
8
From natural to algebraic language
Translate the following sentence in algebraic language:
The square of an even number
# Numbers & operations
Training
8
Associative property for the sum
If a+b=9 then a+b+5=?
# Numbers & operations
Training
8
Modelação de funções trigonométricas
A profundidade da água do mar, à entrada de um certo porto de abrigo, varia com a maré.
Em 24 horas, cada maré alta ocorre duas vezes assim como cada maré baixa.
Qual é a expressão que pode definir a profundidade, em metros, da água do mar, à entrada do porto, $ t$ horas após a maré baixa?
# Trigonometry
Modeling
11
Uncle Scrooge monies
Uncle scrooge has a lot of money and he usually swim in it, if you know that there are 10000 monies of 1 euro, 15000 monies of 2 euro and 8000 monies of 50c and 2000 banknote of 5€, how much euros does he have?
# Operations with natural numbers
Training
4