Предмет: Математика, автор: Lana444444i04444

длина прямоугольника 4целых 5/7 см а ширина в 3 раза меньше длины найдите периметр
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Ответы

Автор ответа: elenacybulina68
0

Ответ:

а=4 5/7

b=?

P=?

4 5/7÷3=33/7÷3/1=33/7×1/3=11/7×1/1=11/7=b

P=(a+b)×2=(4 5/7+11/7)×2=(33/7+11/7)×2=44/7×2=88/7 см=

=12 4/7см

ответ Р=12 4/7см

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GRAMMAR - SIMPLE PAST TENSE

EASTER HOLIDAYS

Fill in the blanks with the right forms of the verbs in brackets.

They _________________(spend) a wonderful time there. They ______________(wake up) early in the morning and then they ________________(go) for a walk. In the village they __________________(buy) everything they _______________(need).
In the afternoon they ___________________(play) football, ____________(watch)
the birds and ________________(swim) in the river.
They ________________(not have) a TV set, so after dinner they ______________
(talk) for a while and then they ________________(go) to sleep.
One night, Jimmy _______________(have) a very strange dream: they ______(be)
by the river watching the moon.
Suddenly they ______________(hear) someone calling “Hello! Hello!” They _____________(turn) around and they ______________(see) a strange creature.
It _____________(be) green and very small. He ________________( invite) them to go to his spaceship. There they ______________(meet) other strange creatures and a beautiful princess.
They ______________(sit) down round a table and they _____________(eat) some strange food. Jimmy _______________(drink) a glass of fruit juice. It ______________(taste) good so he ________________(ask) for another glass of it.
After a while he ______________(feel) a bit strange.
Oh, dear…he ________________(turn) green and small like the others. The princess _______________(not be) beautiful anymore and she ______________(look) horrible.
What was happening?
He ________________(open) his eyes and … what a relief! It ___________(be) only a dream!