Предмет: Геометрия, автор: Коля98

Найдите углы равнобедренного треугольника, если один из его углов в 5 раз меньше суммы двух других.

Ответы

Автор ответа: FallenDemon
0

x - один из углов ри основании

(х+х) - сумма углов при основании

(х+х)/5 - 3-ий угол 

x+x+(x+x)/5=180

2,4х=180

х=75

значит угла при основании 75 а 3-ий 30

 

 

====Второе Решение====

x - один из углов ри основании

(180-2x) - угол при вершине

(180-х) - сумма угла при вершине и одного из углов при основании 

х=(180-х)/5

1,2=36

х=30

значит углы при основании 30 а 3-ий 120

 

 

ОТВЕТ:1)75;75;30    2)30;30;120 

Похожие вопросы
Предмет: Английский язык, автор: shevchenkoarsenii220

Writing.
Task 1. Write a short description of your house. Use some of words in the box.- Опиши свой дом. Используй слова в рамочке.

flat, house, bedroom, bathroom, kitchen, dining room, living room, roof wall, window, door, small, big, beautiful, yard, floor, there is…, there are…, the room has…, on the right…


_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Reading.
Task 2. Read the email and answer the questions. Прочитай текст и ответь на вопросы.


Hi Chloe,
I have to write to you about this! In Pennsylvania, there is a very unusual
home. It is a house in the shape of a shoe. Yes, a shoe! The shoe house has five floors. It has three bedrooms and two bathrooms. There is also a kitchen and a living room. Outside, there is a beautiful garden with many trees and plants. The house is made of wood and metal. It isn’t a home anymore. You can buy ice-cream there now. You should see it. It is very strange, but I like it.
Bye!
Julie
1 Where is the house?


2 How many rooms has it got?


3 How many floors are there?


4 What is there outside the house?

._____________________________________________________________________________

5 What is the house made of?



6 What can you do there now?
пж помогите даю 90 баллов​