Найдите область определения функции///////// корень 10+3х-х2////////

6/8;2/8;3/8;5/8
 откладываем на луче в такой последовательности:
2/8;3/8;5/8;6/8

(2/15)+(3/20)+(7/30)=(8+9+14)/60=31/60
Ответ:31/60

A) ответ 62 листа ( 124:2=62 )
г) ( 124+106=230) , ( 500-230=270) ответ 270

<span><span><span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span> 6 </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span></span><span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span> к </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span></span><span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span> и </span><span>   </span><span> 4 </span><span>   </span><span>   </span><span>   </span><span>   </span></span><span><span>   </span><span>   </span><span>   </span><span> 5 </span><span> д </span><span> е </span><span> с </span><span> я </span><span> т </span><span> и </span><span> ч </span><span> н </span><span> ы </span><span> е </span><span>   </span></span><span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span> а </span><span>   </span><span> и </span><span>   </span><span>   </span><span>   </span><span>   </span></span><span><span>   </span><span>   </span><span>   </span><span>   </span><span> 3 </span><span>   </span><span>   </span><span>   </span><span> й </span><span>   </span><span> с </span><span>   </span><span> 2 </span><span>   </span><span>   </span></span><span><span> 10 </span><span> д </span><span> р </span><span> о </span><span> б </span><span> ь </span><span>   </span><span> 7 </span><span>   </span><span>   </span><span> л </span><span>   </span><span> д </span><span>   </span><span>   </span></span><span><span>   </span><span>   </span><span>   </span><span>   </span><span> о </span><span>   </span><span>   </span><span> н </span><span>   </span><span>   </span><span> и </span><span>   </span><span> о </span><span>   </span><span>   </span></span><span><span>   </span><span>   </span><span> 1 </span><span> з </span><span> н </span><span> а </span><span> м </span><span> е </span><span> н </span><span> а </span><span> т </span><span> е </span><span> л </span><span> ь </span><span>   </span></span><span><span>   </span><span>   </span><span>   </span><span>   </span><span> ф </span><span>   </span><span>   </span><span> п </span><span>   </span><span>   </span><span> е </span><span>   </span><span> и </span><span>   </span><span>   </span></span><span><span>   </span><span>   </span><span>   </span><span>   </span><span> и </span><span>   </span><span>   </span><span> р </span><span>   </span><span>   </span><span> л </span><span>   </span><span>   </span><span>   </span><span>   </span></span><span><span>   </span><span>   </span><span>   </span><span>   </span><span> с </span><span>   </span><span>   </span><span> а </span><span>   </span><span>   </span><span> ь </span><span>   </span><span>   </span><span>   </span><span>   </span></span><span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span> в </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span></span><span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span> и </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span></span><span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span> 9 </span><span> п </span><span> л </span><span> а </span><span> н </span><span> у </span><span> д </span><span>   </span><span>   </span><span>   </span></span><span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span> ь </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span></span><span><span>   </span><span>   </span><span> 8 </span><span> о </span><span> б </span><span> ы </span><span> к </span><span> н </span><span> о </span><span> в </span><span> е </span><span> н </span><span> н </span><span> ы </span><span> е </span></span><span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span> а </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span></span><span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span> я </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span><span>   </span></span></span></span>

1.      Математическое выражение, стоящее под знаком обыкновенной дроби.

2.      Как на Руси называли дроби?

3.      Кто впервые в Европе ввёл десятичные дроби?

4.      Математическое выражение, стоящее над знаком обыкновенной дроби.

5.      Формат дроби.

6.      В какой стране впервые встречаются десятичные дроби?

7.      Как называется эта дробь 9/8 ?

8.      Формат дроби.

9.      Греческий математик, который ввёл слова «числитель» и «знаменатель» в оборот?

10.  Число, состоящее из одной или несколько частей (долей) единицы?

Пусть  - скорость грузовика
Тогда  - скорость легкового автомобиля
Составим уравнение и решим его.


Скорость грузовика 40 км./ч.Правильный ответ указан под буков С.