Предмет: Математика, автор: Drink7787

1) Вычисли:
1869x90 5078x300
8060x500 2830x7000
2) Вычисли площадь квадрата с длинной стороны 600 см. Вырази результат в квадратных метрах.
3) Караван верблюдов движется по пустыне со скоростью 5 км/ч. За сколько часов он пройдёт 40 км?

Ответы

Автор ответа: ksyusha6483

Ответ:

1. 1869×90 = 168210

2. 5078×300=1523400

3. 8060×500=4030000

4. 2830×7000=19810000

2) а= 600 см

Площадь квадрата

S= a*a=a²

S= 600*600= 360000 см² - площадь квадрата

1 м ²= 10000 см²

360000 см²= 360000:10000=36 м²

Ответ : площадь квадрата 36 м²

3) По условию задачи нам предлагается определить время при известных скорости и расстоянии для равномерного прямолинейного движения. Расстояние при равномерном прямолинейном движении выражается формулой: S = v * t, откуда t = S / v = 40 / 5 = 8 (часов).

Ответ: караван пройдет 40 км за 5 часов.

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Русский язык, автор: malahov1605

Как пишется слово облает

1 год назад

Предмет: Английский язык, автор: Vera9647

помогите пожалуйста английский текст русскими буквами ...
ОЧЕНЬ НАДОООО ПОЖАЛУЙСТА
пример(Смол грей рэббит ансвэз:"вэн винтэ камс, чилдрен вэа воом коатс. Зей плэй сноуболс, зей ски энд скейт.)
Belle Lawrence

I'm in the third year of high school It's not the last year, because there i: one more, but I still have to study da> and night instead of going partying. ] even had to give up watching TV and reading foi pleasure in the evening. Everything we do in high school is important, as all our grades get into oui official records. Sometimes future employers anc universities want to see more than just final exarr results: they also want to see how students hav« worked and improved over the years. Although oui end-of-school exams are only next year, all of us are feeling the pressure. We keep working all the time. We'll finish our secondary education at the age of eighteen. Some of us will say "goodbye" to studying forever, but a lot of my schoolmates want to go on studying at colleges and universities.

This year I'm going to take an SAT reasoning test. It's a standard test required by most American colleges. The SAT shows not only what you have learned at school, but also how well you can use your knowledge to analyse and solve problems. It consists of three major sections: Critical Reading, Mathematics, and Writing. The SAT results are believed to predict whether a student will do well at college. The test is carried out by Educational Testing Service nearly every month and costs $45. Although you can sit the SAT as many times as you want, normally it's taken once or twice. I keep putting it off, but in March I'll have to go for my first try. I hope I'll do well and won't have to resit it.

I've decided to apply to UCLA, the University of California Los Angeles, so I'll need a high score in my test. UCLA is one of the most popular universities in the States. I know that in the last few years they have received more applications than any other university and have admitted only about ten per cent of those who applied. Students are attracted to UCLA by both its excellent educational and social-life opportunities.

1 год назад

Предмет: Другие предметы, автор: modnitha

как дельфины получают информацию