Who has a Chinese dictionary on hand to help you find the pronunciation of a word, Such a word: up and down structure It's a word "Wen" on the top and a word "jiu" in the middle of the word "Chuan" on the bottom

Who has a Chinese dictionary on hand to help you find the pronunciation of a word, Such a word: up and down structure It's a word "Wen" on the top and a word "jiu" in the middle of the word "Chuan" on the bottom

The pronunciation of the word "Ji". As a name, can you read it once? There is one pronunciation in the vocabulary, but there are only three in the Chinese dictionary. Which one should prevail?

This is a polyphonic word
"Ji", Pinyin: Xu ǎ n Xu ā n
However, the first tone is not used now, so you can only find the one who reads the first tone in Ci Hai
As a name, I don't think it's necessary to tangle so much

How many hours does it take for a car to travel 80 kilometers per hour and 60 kilometers per hour?

If it's running at a constant speed, you can get it by dividing 60 by 80. If it's not running at a constant speed, you have to calculate it by sections

Given the set a = {- 1,0}, the set B which satisfies the condition AUB = {- 2, - 1,0,1,2} is common

Four
Method 1
B set must have at least - 2,1,2, and at most - 2, - 1,0,1,2
Then you can arrange and combine: C (2,0) + C (2,1) + C (2,2) = 4
C (2,0) is the formula of combinatorial number, which means that the three elements of - 1,0 are 0, 1 and 2 in turn
Method 2: directly use the formula = 2 ^ (5-3) = 4, which is the power

Factorization (x2-4x + 2) (x2-4x + 6) + 4
X2 is the square of X

=(x^2-4x)^2+8(x^2-4x)+12+4
=(x^2-4x)^2+8(x^2-4x)+16
=（X^2-4X+4）^2
=(x-2)^4
(^: power)

Apple, banana and orange are worth 1575 yuan in total. According to weight, the ratio of apple to banana is 1 / 2, banana to orange is 1 / 2; according to unit price, the ratio of apple to banana is 3 / 2, banana to orange is 5 / 4. How much are the three kinds of fruits worth?

Weight ratio: Apple: banana: Orange = 1:2:4
Unit price ratio: 15:10:8
Value ratio of three kinds of fruits: 15: (2 * 10): (4 * 8) = 15:20:32
Respectively 1575 ÷ (15 + 20 + 32) * 15
Banana 1575 ÷ (15 + 20 + 32) * 20
Orange 1575 △ 15 + 20 + 32 * 32

A bottle of alcohol, the first time pour out 1 / 3 of the total, the second time pour out 1 / 2 of the total, then there are 55 grams of alcohol in the bottle, how much alcohol is there

Total = 55 (1-1 / 3-1 / 2) = 330 G

How many cubic meters is one liter
Help me

1 liter = 1 cubic decimeter = 0.001 cubic meter

Two kinds of fruits, apples and peaches, were delivered to the fruit shop, accounting for three fifths of the total fruits. After 250 kg of apples and 50 kg of peaches were sold, the quality of the two kinds of fruits was equal. How many kg of apples and peaches were delivered?

Suppose there are x kilograms of apples and peaches
3X/5-250=2X/5-50
The solution is x = 1000 kg
A: there are 1000 kilograms of apples and peaches

What does half divided by one third mean

One in two is several times as much as one in three
Or: given that the product of two factors is 1 / 2, and one factor is 1 / 3, how much is the other factor