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Anastasia16666
Anastasia16666
18.02.2020 06:05 •  Алгебра

Какие числа образуют множество действительных чисел примеры чисел каждого вида

👇
Ответ:
Действительные числа делятся на:
1) Положительные (8; 17), отрицательные (-3; -54) и 0.
2) Рациональные (1,8; 9) и иррациональные (√3; Пи).
3) Рациональные делятся на целые (-6; 4) и дробные (0,6; 1/7)
4) Целые числа могут быть натуральными (1, 56)
5) Дроби делятся на конечные (0,5; 2,17) и бесконечные (1/3=0,(3); 1/7=0,(142857) ).
6) Также дроби делятся на правильные ( меньше 1) и неправильные (больше или равно 1).
7) Ещё дроби бывают простые (33/17) и смешанные (5 1/3).
8) Иррациональные числа бывают алгебраическими, которые могут быть корнями уравнения с целыми коэффициентами (например, √7) и трансцендентными, которые не могут быть корнями (например, Пи).
9) Натуральные числа бывают простыми (5; 13), составными (6, 10) и 1, которое не простое и не составное.
10) В множестве натуральных чисел есть много интересных. Например, факториалы или совершенные числа.
Вот так мы без труда накидали десяток подмножеств действительных чисел. Если подумать, можно и ещё что-нибудь вспомнить.
4,4(96 оценок)
Открыть все ответы
Ответ:
nikitaaleksandrov
nikitaaleksandrov
18.02.2020

阿迪爾汗

is my mother. She has baked a delicious strawberry pie.

are my grandparents. They are riding bikes.

is our house. I can see it from here.

are my parents. My Mom’s name is Ann and my father’s name is Tom

is my mother. She has baked a delicious strawberry pie.

are my grandparents. They are riding bikes.

is our house. I can see it from here.

are my parents. My Mom’s name is Ann and my father’s name is Tom

is my mother. She has baked a delicious strawberry pie.

are my grandparents. They are riding bikes.

is our house. I can see it from here.

are my parents. My Mom’s name is Ann and my father’s name is Tom

is my mother. She has baked a delicious strawberry pie.

are my grandparents. They are riding bikes.

is our house. I can see it from here.

are my parents. My Mom’s name is Ann and my father’s name is Tom

is my mother. She has baked a delicious strawberry pie.

are my grandparents. They are riding bikes.

is our house. I can see it from here.

are my parents. My Mom’s name is Ann and my father’s name is Tom

is my mother. She has baked a delicious strawberry pie.

are my grandparents. They are riding bikes.

is our house. I can see it from here.

are my parents. My Mom’s name is Ann and my father’s name is Tom

is my mother. She has baked a delicious strawberry pie.

are my grandparents. They are riding bikes.

is our house. I can see it from here.

are my parents. My Mom’s name is Ann and my father’s name is Tom

is my mother. She has baked a delicious strawberry pie.

are my grandparents. They are riding bikes.

is our house. I can see it from here.

are my parents. My Mom’s name is Ann and my father’s name is Tom

is my mother. She has baked a delicious strawberry pie.

are my grandparents. They are riding bikes.

is our house. I can see it from here.

are my parents. My Mom’s name is Ann and my father’s name is Tom

is my mother. She has baked a delicious strawberry pie.

are my grandparents. They are riding bikes.

is our house. I can see it from here.

are my parents. My Mom’s name is Ann and my father’s name is Tom

is my mother. She has baked a delicious strawberry pie.

are my grandparents. They are riding bikes.

is our house. I can see it from here.

are my parents. My Mom’s name is Ann and my father’s name is Tom

is my mother. She has baked a delicious strawberry pie.

are my grandparents. They are riding bikes.

is our house. I can see it from here.

are my parents. My Mom’s name is Ann and my father’s name is Tom

is my mother. She has baked a delicious strawberry pie.

are my grandparents. They are riding bikes.

is our house. I can see it from here.

are my parents. My Mom’s name is Ann and my father’s name is Tom

is my mother. She has baked a delicious strawberry pie.

are my grandparents. They are riding bikes.

is our house. I can see it from here.

are my parents. My Mom’s name is Ann and my father’s name is Tom

is my mother. She has baked a delicious strawberry pie.

are my grandparents. They are riding bikes.

is our house. I can see it from here.

are my parents. My Mom’s name is Ann and my father’s name is Tom

is my mother. She has baked a delicious strawberry pie.

are my grandparents. They are riding bikes.

is our house. I can see it from here.

are my parents. My Mom’s name is Ann and my father’s name is Tom

is my mother. She has baked a delicious strawberry pie.

are my grandparents. They are riding bikes.

is our house. I can see it from here.

are my parents. My Mom’s name is Ann and my father’s name is Tom

4,4(29 оценок)
Ответ:
Пусть х рядов было в зале  , по  у мест в каждом ряду всего мест х*у=80 тогда после ремонта стало (х-3) ряда , по (у+4) мест (х-3)*(у+4)=84 х*у=80 (х-3)*(у+4)=84 ху=80 ху -3у+4х-12=84 ху=80 80-3у+4х-12=84 ху=80    ⇒  х=80/у 4х-3у =16 ху=80  ⇒      х=80/у 4*(80/у)  -3у  =16 (320/у)    -3у -16=0 домножим на у , избавимся от знаменателя 320 -3у²-16у=0 3у²+16у-320=0 d= 256+3840= 4096    √d= 64 y=(-16+64)/6= 8 мест    ⇒ x=80/8 =10 рядов у=(-16-64)/6 < 0 не подходит  ответ : до ремонта было 10 рядов по 8 мест
4,5(76 оценок)
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