Итоговая по математике для 8 кл
Quiz
•
Mathematics
•
8th Grade
•
Medium
Виктория Амелюшкина
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18 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Упростите выражение (6/(a2 – 9) + 1/(3 – a)) • (a2 + 6a + 9)/5 и найдите его значение при а = –4.
0,2
-0,2
0,5
1, 4
2.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Выполните действия: (2√3 – 3√2)2 + √24(6 – 5√6).
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
При каких значениях х функция у = (3х – 2)/4 – (5х + 1)/2 принимает положительные значения?
x < –4/7
x < 4/7
x >-4/7
x >4/7
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Поезд должен был пройти 420 км за определенное время. Однако по техническим причинам выехал на 30 мин позже. Чтобы прибыть вовремя, он увеличил скорость на 2 км/ч. Какова была скорость поезда?
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Решите систему уравнений:
(-3;1) (3;49)
(1;49)(-3;3)
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Решите уравнение:
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
У бабушки 20 одинаковых по форме пирогов: 10 с капустой, остальные с вареньем. Бабушка достает случайно выбранный пирог. Найдите вероятность того, что это будет пирог с вареньем.
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