
Desafio Matemático
Authored by Denilson Sá
Mathematics
8th Grade
Used 6+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Qual era a altura do poste? (Considere o triângulo formado, onde um dos lados mede 3 m, a altura mede 4 m e a outra parte do poste é a hipotenusa. Use o teorema de Pitágoras para calcular.)
5 m
9 m
10 m
12 m
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Quantos segundos correspondem a 1/6 de um minuto?
6 segundos
10 segundos
15 segundos
20 segundos
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Se um coração bate 17 vezes em 15 segundos, quantas vezes ele bate em um minuto?
34
68
70
170
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
O dobro de um número subtraído 20 é igual a 100. Qual equação representa essa situação?
2x + 20 = 100
x² - 20 = 100
2x - 20x = 100
2x - 20 = 100
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Um quarto de hora tem quantos minutos?
25 min
10 min
30 min
15 min
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Qual desses ângulos é um ângulo reto?
α
β
γ
δ
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
O número de diagonais de um polígono de 5 lados é: d = n.(n-3)/2 Onde: d = diagonais, n = lados
4
5
6
7
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