Предмет: Алгебра, автор: cooperplay16

Решить неравенство
x(x+3)(x-5) ≤ 0

Ответы

Автор ответа: romasychevski
0
x1=0
x2=-3
x3=5
Отмечаем на числовой прямой и получаем промежутки
Ответ:(-бесконечности;-3]U[0;5]
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3. Choose the right answer:

1) The _______ picked up everything in its path, including animals and cars.

Tornado

Rainbow

Breeze

Snow

2) Let's close all of the windows. It looks like a ______ is coming.

Thunderstorm

Humidity

Forecast

Precipitation

3) Can you check the _______ before we get dressed for our walk?

Breeze

Temperature

Degree

Flood

4) All of the schools were closed because of the ______ .

Drizzle

Fog

Slush

Snowstorm







5) It was too _____ for the pilot to land the plane.

Foggy

Forecast

Tornado

Raining cats and dogs

6) They had to stop playing football because we didn't want to get struck by ______.

Thunder

Frost

Drizzle

Lightning

7) There was a ______ in the middle of summer; we didn't have to turn our air conditioner on for weeks.

Forecast

Cold spell

Humidity

Rainbow

8) A _____ is a dangerous tropical storm.

Snowstorm

Blizzard

Lightning

Hurricane





9) I don't think you need to bring an umbrella. It's only _____ now.

Drizzling

Fog

Raining

Sleet

10) It was _______ , so we all jumped into the lake.

Slushy

Raining cats and dogs

Boiling hot

Windy

11) Don't bother with a hat. There is always a ______ near the ocean.

Lightning

Frost

Thunder

Breeze

12) It's a bit _____ today, so I think you should wear a coat.

Sunny

Chilly

Heat-wave

Smog

13) On a ____ night you can see a lot of stars.

Clear

Rainy

Snowy

Windy

14) The _____ was so bad, our basement was full of water.

Blizzard

Fog

Hail

Flood



15) There was so much _____ that some of the trailer homes were destroyed.

Drizzle

Hail

Humidity

Sleet

16) Half of the buildings on the island were flattened by the ______ .

Frost

Smog

Hurricane

Slush

17) There is very little ______ in the desert.

Temperature

Raining cats and dogs

Heat-wave

Precipitation

18) According to legend you can find a pot of gold at the end of a _____ .

Rainbow

Thunderstorm

Lightning

Shower

19) My favorite season is ____ , because I love to watch the leaves changing colours.

Spring

Summer

Autumn

Winter

20) All-weather-tires are best if you have to drive in _____ .

Thunder

Rain

Heat-wave

Sleet
Предмет: Математика, автор: BEQ228