Предмет: Математика, автор: heavytank2015

x*-3+x*-2+x*2+x*3 при x=-1

Ответы

Автор ответа: Shkolota95
0
нужно просто вместо x поставить значение -1
-1*(-3)+(-1)*(-2)+(-1)*2+(-1)*3=0

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Underline the correct word or phrase.
Example:​Most of my friends has / have / are have cars.
1​Why you’re using / are you using / you using my iPod?
2​Mike and Leila no are working / aren’t working / not working today.
3​Listen! Someone she’s playing / playing / is playing the piano.
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5​Where works Sylvia / Sylvia works / does Sylvia work?
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3​Put the words in the correct order.
Example:​doing Paul is now ?
What is Paul doing now?
1​ wearing why you are trainers ?
​_____________________________________________
2​school which to Grace go does ?
​_____________________________________________
3​exercise you any do kind do of ?
​_____________________________________________
4​university what studying are you at ?
​_____________________________________________
5​coffee many drink how of did cups you?
​_____________________________________________
6​instruments can any you musical play ?
​______________________________________________


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Grammar total

20
VOCABULARY
4​Complete the sentences with the correct word.
Example:​Rebecca has long straight hair.
curly long big
1​Janette loves meeting new people. She’s very __________.
​hard-working clever extrovert
2​I’m __________ height and quite slim.
​tall short medium
3​Neil is __________. He doesn’t have any hair.
​fair bald blond
4​Tony is __________ because he doesn’t do any exercise.
​slim thin overweight
5​My sister’s really __________. She’s nice to everybody.
​mean friendly funny
6​Flavio’s really __________. He always makes me laugh.
​funny hard-working serious
7​You were very __________. Why didn’t you say anything?
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8​Tessa’s very __________. She never does any work!
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5​Match the words in the box with the definitions. There are five words you don’t need.
boots a bracelet a cap a coat gloves tights a ring sandals a scarf a suit a T-shirt a tracksuit
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1​A top you wear in summer. __________
2​You wear them on your hands when it’s cold. __________
3​You wear it over your clothes when you go out. __________
4​Jewellery for your finger. __________
5​Footwear for summer. __________
6​A jacket and a pair of trousers or a skirt. __________


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6​Underline the correct preposition.
Example: My desk is the one between / on the left / near the door.
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Vocabulary total

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