Предмет: Алгебра, автор: Crybro228

Две пятых в 10 степени * две целых одну вторую в 7 степени

Ответы

Автор ответа: khl20142015
2

Ответ:

0,064

Объяснение:

(\frac{2}{5} )^{10} *(2\frac{1}{2} )^{7}=\frac{2^{10}}{5^{10}} *\frac{5^{7}}{2^{7}} =\frac{2^{3}}{5^{3}} =\frac{8}{125} =0,064


Crybro228: можно решение
Crybro228: а все
Crybro228: увидел спасибо
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Ex.3. Complete the sentences. Use Past Simple and Past Continuous.1-It ………………..(rain) when we………………….(go out).
2-I ………………..(open) the window because it was hot.
3-When I got to the office, Ann and Peter ………………(work).
4-The phone…………….(ring) while Sue……………..(cook) dinner.
5-I ………………..(hear) a noise, so I………………..(look) out of the window.
6-Tom………………(look) out of the window when the accident………………(happen).
7-Bruce had a book in his hand, but he……………(not / read)it. He…………..(watch) TV. 
8-Eric bought a magazine, but she…………….(not / read) it. She didn’t have time.
9-I……………..(finish) lunch,………………(pay), and……………..(leave)the restaurant.
10-I ……….(see) Kate this morning. I …………(walk) along the street, and she…………. (wait) for the bus.
Ex.4. Fill in the correct forms of Past Simple or Past Continuous.One day I (play) was playing football with some friends, when I (see)___________four boys on a bridge nearby. They (laugh)____________and (shout)_____________and I (wonder) what they (do) ___________ . Then I (notice)___________that they (wave)____________a puppy in the air. When the boys (see)__________me they (throw)______________the puppy over the bridge and it (fall)________________into the river. They (run)______________off laughing. I (jump)___________over the wall,(run)_____________down to the river and (leap)_____________into the water. I (grab)___________the puppy and (swim) ____________ back to the safety. My friends, who (stand)____________on the bridge,(clap)____________ . I was a hero.Ex.5. Fill in the correct forms of Past Simple or Past Continuous.1. Yesterday she (go)____________________to school by car.
2. I (play) ____________________tennis yesterday, but I __________________(do not)win.
3. Eric( read) __________________book when the telephone _____________(ring).
4. It (rain) _________________when I __________________(get) up.
5. ____________________( watch) you the movie on television last night?