Предмет: Алгебра, автор: еремян

Найдите значение выражения 14ху-2у+7х-1
если х это одна целая одна седьмая, а у -0,6

Ответы

Автор ответа: Аноним
0
14ху - 2у + 7х - 1 = 14ху + 7х - 2у - 1 = 7х(2у + 1) - 2у - 1 = 7х(2у+1)-1(2у+1) = (7х-1)(2у+1) = (7 × 1 1/7 - 1) (2 × (-0,6) + 1) = (8 - 1) (-1,2 + 1) = 7 × (-0,2) = (-1,4).
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ЗАДАНИЕ №4

ВРЕМЯ НА ВЫПОЛНЕНИЕ:

00:00

ТЕКСТ ЗАДАНИЯ

Task 2 Read the text. Rollover Accident

Oh, no! Tom was driving along the 55 Main Road in Costa Mesa when his car rolled over. He was driving too fast around a curve in the freeway, and his car went off the road and rolled over. Luckily, no one was hurt. Tom is okay, but he is upset. The roof of his car is damaged and the left door is broken. His wife does not like to drive with him. It is dangerous! Tom called the police on his cell phone, and they are on the way. He didn’t want to call to police. He also called his insurance company and his wife. His wife wants him to go to the hospital for a medical examination. Tom thinks he’s okay, and he doesn’t want to go to the hospital. He wants to go home. Should Tom go to the hospital for a medical examination? What should he do next?

Mark the sentences True and False.

1. The 55 Main Road is in Costa Mesa. _____

2. Tom called the police, his car insurance company, and his wife. _____

3. His wife doesn’t enjoy driving with him. _____

4. The roof of Tom’s car is safe and the right door is broken. _____

5. Tom doesn’t want to go home because his wife is angry. _____

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