Радиус окружности с центром О=6см, вписанный угол ACB=45 градусов.Найдите площадь треуголника АОВ.

Саша,Семен,Зоя и Лера бросили жребий-кому начинать игру. Найдите вероятность того,что игру начнет не Семен.

Запишите уравнения диссоциации: Fe2(S04)3, Na2S04, KN03, Ва(ОН)2.

Раскрыть скобки в нужной форме:) помогите пожалуйста:)
Оn holidays banks offices and school ( to close).
Thanksgiving day ( to observe) foralmost 400 years.
The first Thanksgiving( to celebrate) in 1621.
For forty yers a womannamed sarah hale (to write) to each president asking for a holiday of Thanksgiving.
At last Thanksgiving ( to declare) a holiday by president by President Lindon in 1863
Sinse that time it( to celebrate) on the fourth Thursday in november allthough thecountry.
Parades hand concerts baseball games and different contents (to hold) on this day for many years.
Thanksgiving (to call) "turkey day"because dinner with a hyge tyrkey is the main event of the day /
Independence ( to sign) .
since that time Independence day( to celebrate) with fireworks and picnics in the parks.

олимпийчкие победы казахстана.

срочно надо помогите плиззззз))))