
Experiência
Authored by Amélia Marques
Mathematics, Education
10th Grade
Used 5+ times

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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Uma condição que caracteriza o lugar geométrico sombreado é:
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Na figura estão representadas duas circunferências com centro na origem e uma reta r que passa nessa origem.
Sabe-se que:
• os raios das circunferências C1 e C2 são 3 e 5 , respetivamente;
• A e D são os pontos de interseção de C2 com r ;
• B e E são os pontos de interseção de C1 com r .
x2 + y2 = k é uma equação da circunferência C1 , em que k é igual a:
5
2
3
9
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Considera, num referencial cartesiano do plano, o ponto P (2 - 3k , k + 1) , com k pertencente ao conjunto dos números reais.
O ponto P pertence à bissetriz dos quadrantes pares se k for igual a:
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
No espaço, a equação do plano paralelo ao plano yOz e que contém o ponto H (4, 5, 6) é:
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual das seguintes arestas do paralelepípedo [ABCDEFGH] pertence à reta
x = 0 ∧ z = 2 ?
[CD]
[EH]
[BF]
[GH]
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Na figura está representada uma esfera, centrada na origem do referencial e em que se conhece as coordenadas de um dos seus pontos, o ponto P (4, 3, 0) .
A condição que define a esfera é:
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Considera, num referencial o.n., Oxyz a reta
r : y = −2 ∧ z = 8 .
Qual dos seguintes vetores é um vetor diretor da reta r ?
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