
Test 17 - kl 8
Mathematics
8th Grade
Used 4+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suma liczb x i y jest liczbą dodatnią, a ich iloczyn jest liczbą ujemną. Na osi liczbowej odległość każdej z tych liczb od zera jest taka sama.
Prawda
Fałsz
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
x5 - 5, 8x + 11, - 0,5x - 6 jedno z nich przyjmuje wartość 6 dla x = 0
Prawda
Fałsz
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
x2 - (x + 1)2 przyjmuje zawsze wartość ujemną
Prawda
Fałsz
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Wielkość m poprawnie wyznaczona ze wzoru am + 1 = t - am
(t-1) : 2a
t - 1 - 2a
2(t - 1):a
2a + t + 1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Obwód prostokąta jest równy 14x2 + 14.
Jeden bok jest równy 5x2 + 2. Długość drugiego boku:
2x2 + 5
9x2 + 12
12x2 + 9
7x2 + 7
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dane są dwa wyrażenia 600 - 5n oraz 120 + 3n. Można wyznaczyć takie n, dla którego wartości tych wyrażeń są równe.
Prawda
Fałsz
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Czy suma trzech kolejnych liczb nieparzystych jest podzielna przez 3?
Tak, bo n + (n +1)+ (n + 2) = 3n + 3 = 3(n +1).
Tak, bo (2n +1)+ (2n + 3)+ (2n + 5) = 6n + 9 = 3(2n + 3).
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