Вариант 21
11th Grade
•12 Qs
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Вариант 21
Quiz
•
Mathematics
•
11th Grade
•
Medium
Ira P
Used 1+ times
FREE Resource
12 questions
Show all answers
1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
В арифметической прогрессии 10 членов. Сумма членов с четными номерами равна 40, а сумма членов с нечетными номерами равна 15. Найдите разность прогрессии.
2.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Решите уравнение
(х2+3x)2 - 14x2 - 42x + 40 =0.
Для проверки введите все получившиеся корни по возрастанию через пробел
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Отметьте верные утверждения (ответов может быть несколько)
0 ∉ Z
√13 ∉ I
2,3 ∉ R
8,3 ∉ Z
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
В треугольнике CDE известно, что CD 8см, DE 10 см, CE 12 см, DK — биссектриса треугольника CDE. Найдите длину отрезка DK.
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
АВСD - параллелограмм. ВK - медиана в треугольнике АВD. Площадь треугольника АВК равна 15 см2. Найти площадь параллелограмма АВСD.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Решите систему неравенств
(-∞;3]
(-∞;2)
(2;3]
нет решений
∅
x∈R
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Решите совокупность неравенств
(-∞;3]
(-∞;2)
(2;3]
нет решений
∅
x∈R
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