Ответ по предмету Математика: В треугольнике ABC известно, что угол С=90 градусов, угол B=30 градусов. На катете BC отметили точку D такую, что угол ADC=60 градусов. Найдите катет BC, если CD=5 сантиметров.

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at / to / no article / for

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Did you see / Do you see / Have you seen / Had you seen.

People ______ Microsoft Tablet PC in the 20th century.
didn’t use / got used / have used / used to

A new film _____ at the lesson a few days ago.
was shown / showed / will be shown / was being shown

A group of foreign students will be met at the airport at 5 p.m. ____ 2 hours.
in / at / on / during

Raymond _____ pay for an order as there is not any money in his wallet.
can’t / must / should not / could

As _____________ in the house, we had to leave the note.
nobody wasn’t / there was nobody / somebody was / there was none

My friends had to go home because of bad weather, ________ ?
didn’t they / had they / hadn’t they / did it

Be sure to read ... Chapter 3.
a / the / an / no article

The news is _______ shocking.
such a / so / little / no

When the phone rang, I ... dinner.
was cooking / cooked / had made / have been having

Jane will fail this exam __________ she studies harder.
unless / if / when / until

They arrived earlier so that they got __________ seats.
the best / the worst / much comfortable / more softer

I have no any pets. _______ .
So she does / Neither does she / She also doesn’t / Does she so

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anything / some / nothing / it

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had read / read / would read / was reading

Much attention … to science nowadays.
are attracted / is given / is paid / is being taken

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a / the / an / no article

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are / would / were / will

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A / The / An / no article

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to be / been / having been / has been

Have you heard of my _________ abroad?
sister’s going / sister to go / sisters’ had gone / sister going

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make / being made / to be making

Kate played a role as if she … a real actress.
was / was not / is / were

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met / had met / meet
помогите, пожалуйста

7 лет назад

В треугольнике ABC известно, что угол С=90 градусов, угол B=30 градусов. На катете BC отметили точку D такую, что угол ADC=60 градусов. Найдите катет BC, если CD=5 сантиметров.

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