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verchik1739
verchik1739
02.01.2020 15:00 •  Алгебра

Вычислите: log3 81-lne+lg1000 решите

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Ответ:
6a6yle4ka
6a6yle4ka
02.01.2020
\log_381-\ln e+\lg 1000=\log_33^4-\ln e+\lg 1000=4-1+3=6
4,5(55 оценок)
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Ответ:
karins2
karins2
02.01.2020
Добрый день. Я так понял на экспедицию? Если да, то вот примерное сочинение.
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Hiking TripПоходI like hiking a lot. In my opinion, it’s a great source of pleasure and health benefit. Hiking is very similar to a walking tour or camping. It is a long walk in the countryside with occasional stops. Most people go hiking for pleasure or physical fitness. It is important from time to time to leave crowded cities and go out for a walking tour. The open air has a bracing effect on our minds. The sight of huge trees and green bushes, blooming wild flowers and running streams, the birds’ singing – it all carries us away from the depressing daily routine. I especially like hiking in mountainous areas. It is more thrilling that walking in the plains. Last time we went hiking was in summer. Together with our teacher and a group of school children we went to find some picturesque places on the bank of the River Don. We took all the necessary items, including sleeping bags, some food, first aid kit and mosquito spray. We wore sporty outfit and comfy boots. Our rucksacks were rather heavy, but it didn’t spoil our journey. Most importantly we chose the route of our journey and fully planned the trip. We set out early in morning. Luckily, the weather was perfect. Although, there were some clouds in the sky, the wind soon took them away. Our first meal in the open air felt fantastic. We baked some potatoes and frankfurters. It was rather hot, so we could sunbathe and swim in the river. We also played some outdoor games, such as volleyball and football. The next morning we went fishing. It was a great fun. While hiking, we saw lots of beautiful places. Time passed so quickly and soon we had to go back home. No one wanted to leave. We thought it was an unforgettable experience.
4,5(30 оценок)
Ответ:
Muhammadkhodja
Muhammadkhodja
02.01.2020

1) Давайте решим ваше уравнение шаг за шагом.

3x2−18 = 0

Шаг 1: прибавьте 18 с обеих сторон.

3x2−18 + 18 = 0 + 18

3x2 = 18

Шаг 2: разделите обе стороны на 3.

3x2 / 3 = 18/3

х2 = 6

Шаг 3: извлеките квадратный корень.

х = ± √6

x = √6 или x = −√6

3) Давайте решим ваше уравнение шаг за шагом.

х2-х-20 = 0

Шаг 1: Разложите на множители левую часть уравнения.

(х + 4) (х - 5) = 0

Шаг 2: Установите коэффициенты равными 0.

x + 4 = 0 или x − 5 = 0

x = −4 или x = 5

5) Давайте решим ваше уравнение шаг за шагом.

х2 + 6х − 2 = 0

Для этого уравнения: a = 1, b = 6, c = -2

1х2 + 6х + −2 = 0

Шаг 1: Используйте квадратную формулу с a = 1, b = 6, c = -2.

x = −b ± √b2−4ac / 2ax = - (6) ± √ (6) 2−4 (1) (- 2) / 2 (1)

х = −6 ± √44 / 2

x = −3 + √11 или x = −3 − √11

2) x= 0

4) = −4  / 3

4,4(15 оценок)
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