The perimeter of a rectangular piece of land is 120 meters, the width ratio is 1 / 3, how many square meters is the area of this land?

The perimeter of a rectangular piece of land is 120 meters, the width ratio is 1 / 3, how many square meters is the area of this land?

120 △ 2 = 60 (m)
60 ÷ (1 + 1-1 / 3) = 36 (m) long
60-36 = 24 (m) wide
36×24=864（m²）
A: the area is 864 square meters

There are several types of compositions

It can be divided into four categories: narrative, expository, practical and argumentative (1) narrative: a style of writing with narration and description as its main way of expression and people, narration, scenery and things as its main content. 1. Classification of Narrative (1) from the content and way of expression: ① simple narrative. ② complex narrative

One of Du Fu's eight poems was rewritten into a short composition of 400 words

Maple trees gradually wither and injure under the erosion of dew in late autumn. Wushan and Wuxia are also shrouded in bleak and gloomy fog. The waves in Wuxia are surging, and the dark clouds above seem to be pressing down on the ground. The world is gloomy. The flowers have been blooming for two years. Looking at the blooming flowers, I can't help but cry when I think that I haven't been home for two years

Xiao Ming walks one twentieth of a minute. How many kilometers can he walk in 10 minutes? One hour?

50 meters per minute
10 minutes is 10x50 = 500m
One hour is 60x50 = 3000m
Simple enough!

Unit 5 3A translation

Unit 5 3A
Henry,
Thank you for your invitation. I'm sorry I can't visit you this week. I'm really busy. I'm going to my cousin's birthday party tonight. And tomorrow, I have to go to the dentist. (Oops!) on Wednesday, I have tennis training with the school team. And on Thursday, I'll prepare for the chemistry exam, I'm going to the cinema with some friends. Can you go to the cinema with us on Friday?
Write back to me as soon as possible
Sonia

8 and 7, 26 and 78, 10 and 18
It's better to have an answer in five minutes. Please help me with this assignment.

8 and 7 least common multiple 56 greatest common factor 1
26 and 78 least common multiple 78 greatest common factor 26
10 and 18 least common multiple 90 greatest common factor 2

Given the linear function y = KX + B, when - 3 ≤ x ≤ 1, the corresponding value of Y is 1 ≤ y ≤ 9
A. 14b. - 6C. - 6 or 21d. - 6 or 14

It can be divided into two cases: ① passing through (- 3,1) and (1,9) to get: 1 = − 3K + B9 = K + B, the solution is k = 2B = 7, ∥ K · B = 14; ② passing through (- 3,9) and (1,1) to get: 9 = − 3K + B1 = K + B, the solution is k = − 2B = 3, ∥ K · B = - 6, to sum up: K · B = 14 or - 6

1. The cube of a number is equal to itself. The number is ()
2. There is a group of numbers: 1,1 / 2, - 1 / 3,1 / 4, - 1 / 5,1 / 6 The seventh number is ()
3. Comparing the size of - 1 / 5 and - 1 / 6, the result is ()
4、(－1)200＋(－1)201＝( )
5. If (- M) 101 > 0, there must be ()

1,0 or - 1
2. - 1 / 7, each digit is the result of multiplying the previous digit by - 1 and + 1 on the denominator
1 / 5 > 1 / 6, then - 1 / 50
There must be m

The number of geese in Granny Li's family is 3 / 4 of that of ducks, and the number of ducks is 4 / 5 of that of chickens. There are 24 geese. How many chickens are there?

There are 24 geese, and the number of geese is 3 / 4 of that of ducks, so there are 24 △ 3 / 4 = 32 ducks
The number of ducks is 4 / 5 of that of chickens, 32 △ 4 / 5 = 40

Let f (x) = (AX-1) / (AX + 1) (a > 1), 1. Find the range of values, 2. Prove that f (x) is an increasing function
It's an exponential function. X is the exponent of A. 1 is not

(1) Because a ^ x > 0,
So a ^ x + 1 > 1,
So the domain of F (x) is r;
Because f (x) = (a ^ x-1) / (a ^ x + 1) = 1-2 / (a ^ x + 1),
Because a ^ x + 1 > 1,
So 0