Предмет: Математика, автор: lera2016333

Найди значение одночлена 0,04xy2, если x=15 и y=−2

Ответы

Автор ответа: ядиндиночка2005

$0.04 times 15 times - 2 times 2 = - 2.4$

Автор ответа: eogor1313

0.04 * 15 * -2 * 2= -2.4

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Weird Inventions
Have you ever thought about inventing something? Did you worry that your idea
was too strange or unrealistic? Well, maybe you should think again.
Strange or unrealistic ideas never stopped Arthur Pedrick. Pedrick was a British
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Though many of Pedrick’s inventions were never developed, a lot
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several tubes were attached to the bottom of a car. If someone
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thieves, however, were seriously injured. They accidentally set
off the device by walking past the car. Other strange inventions
include underwear for dogs and pens with drinkable ink. The
underwear keeps dogs from making a mess when they go out
for a walk. Also, if you are ever thirsty during a test, a pen with
drinkable ink would be very handy!
If you have an idea that seems a little out in left
field, don’t let that stop you from trying it. You’ll be in good
company.
Reading Comprehension
Choose the best answer.
1. What is the main idea of the reading?
a. Inventions are necessary for a good life. b. Some inventions are very strange.
c. Some devices can help reduce crime. d. Inventing something is easy.
2. What can be said about Arthur Pedrick?
a. He made a lot of money from his inventions.
b. He was a good scientist.
c. He was more interested in creativity than facts.
d. He was often bored.
3. According to the reading, how was Pedrick’s plan to bring water to Australia probably
unrealistic?
a. Australia doesn’t need water. b. Australia and Antarctica are too far away.
c. Tubes are not strong enough. d. The plan was too expensive.
4. What was the problem with the theft prevention device?
a. It was too big. b. It hurt other people besides thieves.
c. It didn’t work. d. Only bicycles could use it.
5. In the reading, what is implied when a dog “makes a mess”?
a. It goes to the bathroom. b. It spreads its food around.
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ummarListening
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5. If you could invent or create something, what would it be?
6. What would you like to invent?
7. How would this invention help people?
8. Do you think this will ever be invented?
9. Why or why not?

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