Предмет: Математика, автор: pipka01

Решить уравнение,очень надо!!!

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Автор ответа: au456

1

C(2x+1;2x-1)=C(2x+1;2)= (2x+1)2x/2=36 x>0
2x^2+x-36=0
x>0 x=9

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Read the text and choose the correct answers.
When we talk about safety, first of all, we mean that nothing threatens our life. But besides our physical safety, it's important to feel safe psychologically. If we are safe, we can learn more and do a lot of exciting activities. We can develop our talents and discover new things. If we don't feel safe, we spend all our energy on getting back to the condition which makes us feel safe. As a result, we have no energy left for anything else. Let's see what makes us psychologically safe.

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Test
1)What do we think about when we hear the word safety?
a)Psychological safety
b)Physical safety
c)None of the above
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a)Learn and develop
b)Sleep and relax
c)Do sports
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b)We don't have enough energy.
c)We feel lost and frustrated.
4)What happens when we feel safe?
a)Everybody tells us our mistakes.
b)We don't make mistakes.
c)We can share ideas.
5)What can help to feel safe?
a)Politeness, independence and confidence
b)Tough character, active behaviour and rudeness
c)Positive attitude, clear rules and roles

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