
Avaliacão Formativa /Sumativa
Authored by Fátima Dores
Mathematics
9th Grade

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10 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 5 pts
Quais dos seguintes pares de grandezas são inversamente proporcionais?
A duração e o custo de uma chamada telefónica, taxada a 30 cêntimos.
A velocidade média e o tempo necessário para percorrer uma distância de 30 Km
O peso e o custo de um saco de batatas, sendo estas vendidas a 2€/kg.
A base e a altura de triângulos com 30 centímetros quadrados de área
2.
MULTIPLE CHOICE QUESTION
45 sec • 5 pts
Qual das seguintes expressões representa uma de proporcionalidade inversa?
3.
FILL IN THE BLANK QUESTION
45 sec • 5 pts
Ao gráfico de uma proporcionalidade inversa chama-se ...
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
a = 30 ; b = 6 ; c = 3
a = 6 ; b = 10 e c = 2
a = 120 ; b = 6 ; c = 1
a = 30 ; b = 6 ; c = 2
5.
MULTIPLE CHOICE QUESTION
45 sec • 5 pts
Sabe-se que A é inversamente proporcional a B e que B = 6 quando A = 24.
Determina o valor de A se B = 5
A = 28,8
A = 30
A = 20
A = 120
6.
MULTIPLE CHOICE QUESTION
45 sec • 5 pts
7.
MULTIPLE CHOICE QUESTION
45 sec • 5 pts
As variáveis representadas na figura são inversamente proporcionais.
Qual é a constante de proporcionalidade?
Todas as opções anteriores estão erradas.
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