Предмет: Геометрия, автор: makarovajulya

В равнобедренной трапеции боковая сторона равна 10 ,большее основание - 14,меньшее 4,а угол при меньшем основании равен 120 градусам.Найдите площадь трапеции.

Из точки С лежащей вне круга проведены две секущие. Первая секущая пересекает окружность в точках А и D (точка D лежит между А и С) Вторая секущая пересекает окружность в точках В и Е ( точка Е лежит между В и С). Угол АСВ равен 35 градусам. Градусная величина дуги АВ окружности равна 168 градусов. Найдите угол  DАЕ. Ответ дайте в градусах.

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Ответы

Автор ответа: zzadr
0
первая задача по этой формуле хорошо решается
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Предмет: Английский язык, автор: olgageneralova67
Read the text and mark the stateme ita True T). Falsa (F),
Not Stated (NS).
Bicycle Helmets
Tom, a friend of mine, a college student, loves riding his bicycle at
weekends. He especially enjoys taking long des through the city. To my
surprise, I found he never wears a helmet.
I began to wonder why a person who spends to much time and money de
veloping his mind doesn't wear a helmet. Ridi cg a bicycle without a helmet
greatly increases his risk of brаin injury (чері учно-мозговая травма).
),
Each year, over 50,000 people in the United States suffer some torm of
brain injury from a bicycle accident. Unfortunately, many of them have
ong-lasting effects. Getting medical treatment (neue He) can cost very
big money and can take many years. Compare this waste of time and
money with the $40 you spend on a bicycle helmet.
It is not always easy to get a friend to wear a bicycle helmet. Be patient
Give your friend time to come to his or her wn decision about wearing
one. Invite your friend to take a bicycle rideath you Without saying any
thing, put your helmet on quietly. If you stop at a store during your
bike
ride, keep your helmet on. This will send a mussage that you are comfort
able wearing a helmet both on and of your bike. If you rernove it too
quicklyyour friend may think wearing a helmet is not very nice.
Buying your friend a helmet as a present may not be such a good idea.
Your friend may feel you are pushing too hard. Each perse needs to
reach his or her own conclusions (Bb BOND) about safety and how to
protect the body
1. Tom goes to university by bike.
2. He loves riding in the country.
3. Riding a bicycle without a helmet in very dangerous.
4. Over 500 bicycle accidents happen
in the USA every day
5. Medical treat ent for brain injury is very long
and expensive (poporod).
6.
Bicycle helmets are not expensive
7. One should make his friend wear
a helmet when they go bike riding
8. It takes several months to get
a friend to wear a bicycle helmet
9. Bicycle helmets as birthday presents are very popular,
10. If you set an example it'll help you trend
start wearing a bicycle helmet. ПОЖАЛУЙСТА ПОМОГИТЕ​