Предмет: Математика, автор: nykaktak

5) упростите выражение и найдите его значение: 5a(a² - 4a) - 5a³
при а= -3​

Ответы

Автор ответа: ildar502020
5

Ответ:  -180.

Пошаговое объяснение:

5a(a² - 4a) - 5a³ = 5a³-20a²-5a³ = -20a²;   при а= -3​

-20*(-3)² = -20*9 = -180.

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Предмет: Биология, автор: Ghoulssssss
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1 Классификация хромосомных мутаций

2 Сформулируйте закон гомологических
рядов наследственной изменчивости

3 Влияние на фенотип

4 Классификация геномных мутаций

5 Каковы статистические закономерности
модификационной изменчивости?

6 Влияние на генотип

7 Какие мутации называются
соматическими?

A Внутрихромосомные (делеция, инверсия,
дупликация) и межхромосомные (транслокация)

S Происходит изменение фенотипа адекватное
изменению среды

D Мутации в соматических клетках

F Не происходит изменения генотипа

G Средние значения признаков встречаются чаще,
чем крайние

H Полиплоидия и гетероплоидия (моносомия,
трисомия, полисомия, нулесомия)

J Виды и роды генетически близкие проявляют
сходные ряды наследственной изменчивости

Срочно нужно! Ответ для удобности можете дать
1S, и тд - для удобности.
Предмет: Английский язык, автор: MabelLike
спасити х.х
Прочитайте текст и отметьте, являются ли утверждения после него верными (T) или неверными (F).
Last summer Alice Duglas spent her holidays with her parents and her little brother Sammy. They went to the seaside. The family lived in a nice little cottage near the beach. The weather was fine. It was warm and sunny and the children went swimming every day.
One day Alice and Sammy decided to go boating. They took a nice small boat from the beach and started boating along the beach. Then a strong wind started to blow and it took the boat into the open sea. Alice tried to turn the boat and get back to the beach, but she lost balance and fell into the water.
She didn’t know what to do. Alice was a good swimmer but at that moment she was afraid and she couldn’t swim. Her little brother couldn’t help her. She began to cry, “Help! Help!”
Suddenly Alice saw dolphins in the water around her. One dolphin took Alice on his mouth and put her in the boat. Then the dolphins swam away. Little Sammy said, “Did you see that?! That dolphin helped you!” Alice was very happy. She was back in the boat. Alice wanted to say thank you to the dolphin but when she looked around, she saw just water and a clear blue sky.
The two children got back to the beach. They told the story to their parents. Now the dolphins are the most favourite animals in the Duglas family. They hope they will meet this kind dolphin one day and thank him.

1) There were two children in the Duglas family.
2) Alice and Sammy couldn’t swim.
3) Alice and Sammy went boating one day.
4) Alice’s brother helped her get to the boat.
5) Alice said thank you to the dolphin.
6) Alice’s parents know what happened to the children.