
Соня математика
Authored by Великий Математик
Mathematics
8th Grade
Used 1+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Сумма углов в любом четырехугольнике равна…?
460 градусов
360 градусов
180 градусов
150 градусов
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
В равнобедренном треугольнике угол при вершине равен 100 градусов, чему равны углы при основании?
40 и 40
80 и 80
80 и 40
100 и 40
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Решите уравнение:
18-(6x+5)=4-7x
-9
-8
-6
9
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Решите уравнение с помощью дискриминанта:
5x^2-4x-1=0
x1=1; x2=-0,2
x1=5; x2=-0,5
x1=2; x2=-0,5
x1=1; x2=0,2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
В пекарне испекли три вида пирожков: с вишней, с капустой и с картошкой.
С вишней 19, с картошкой 11, с капустой 10. Какова вероятность того, что случайно выбранный пирожок будет с капустой?
0,25
0,5
0,2
0,4
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