Предмет: Математика, автор: margo23543

Реши уравнение: -5х^2+9=0

Ответы

Автор ответа: tonagaluk

Ответ:

-5x^2+9=0

Пошаговое объяснение:

a=-5 b=9 c=0

D=b^2-4ac

D=9^2-4*(-5)*0=√81

x1, 2=-(9+-9) /2

x1=(-9+9) /2 =0/2 нет корней

x2= (-9-9) /2=-9

отвнт: -9

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Русский язык, автор: abdugafarova79

ОБРАЗУЙТЕ ОТ ДАННЫХ СЛОВ НОВЫЕ ПРИ ПОМОЩИ ПРИСТАВОК БЕЗ-,БЕС-. ЗАПИШИТЕ.С ДВУМЯ СЛОВАМИ СОСТАВЬТЕ ПРЕДЛОЖЕНИЯ И ЗАПИШИТЕ ИХ.
РАДОСТНЫЙ,СИЛЬНЫЙ,СЛОВЕСНЫЙ,ВКУСНЫЙ,ЦЕННЫЙ,ЗЛОБНЫЙ,СЕРДЕЧНЫЙ.

1 год назад

Предмет: Английский язык, автор: pasha3602450

1.have you got any set plans for this/ next weekend? 2.What do you think you'll do next summer? 3. Who do you want to be when you grow up?

1 год назад

Предмет: Английский язык, автор: Giyre

When Honduras exports bananas toSwitzerland, they can use the money they earn to importSwiss chocolate — or to pay for Kuwaiti oil or a vacation in Hawaii. The basic idea ofinternational trade and investment is simple: each country produces goods or services that can beeither consumed at home or exported to other countries.The main difference between domestic trade and international trade is the use of foreigncurrencies to pay for the goods and services crossing international borders. Although global tradeis often added up in U.S. dollars, the trading itself involves various currencies. Japanesevideocassette recorder is paid for in German marks in Berlin, and German cars are paid for inU.S. dollars in Boston. Indian tea, Brazilian coffee, and American films are sold around theworld in currencies as diverse as Turkish liras and Mexican pesos.Whenever a country imports or exports goods and services, there is a resulting flow of funds:money returns to the exporting nation, and money flows out of the importing nation. Trade andinvestment is a two-way street that, with a minimum of trade barriers, usually makes everyonebetter off.In a interlinked global economy, consumers are given the opportunity to buy the best products atthe best prices. By opening up markets, a government allows its citizens to produce and exportthose things they are best at and to import the rest, choosing from whatever the world has tooffer.Some trade barriers will always exist as long as any two countries have different sets of laws.However, when a country decides to protect its economy by erecting artificial trade barriers, theresult is often damaging to everyone, including those people whose barriers were meant toprotect.The Great Depression of the 1930s, for example, spread around the world when the United Statesdecided to erect trade barriers to protect local producers. As other countries retaliated, tradeplumpered, jobs were lost, and the world entered into a long period of economic decline..

Ответьте на вопросы к тексту.1. What is the basic idea of international trade?2. What is the main difference between domestic and international trade?3. How can you consider trade barriers?4. What opportunities are given to consumers in an intrelinked global economy?5. What were the sequences of the Great Depression of the 1930s?

1 год назад

Предмет: Математика, автор: Plush21

срочно помогите !!! как решать?!4 и 5

8 лет назад

Предмет: Алгебра, автор: Паша22333

За покупку на сумму 65 рублей. Оля расплатилась пяти десятирублёвым монетами. Всего она отдала 9 монет. Сколько среди них было пятирублёвых и десятирублёвых монет?

8 лет назад