Given that the domain of the function y = f (x ^ (2) - 1) is [- √ 3, √ 3], then the domain of the function y = f (x) is

Given that the domain of the function y = f (x ^ (2) - 1) is [- √ 3, √ 3], then the domain of the function y = f (x) is

If x is on [- √ 3, √ 3], then x ^ 2-1 is on [- 1,2], so f (x) is defined as - 1,2]

Uncle Zhang is going to transport 96 chickens raised by his family to the market for sale. The small cage holds 4 chickens each, and the large cage holds 6 chickens each, which is just 18 cages full. How many of these two cages are there?

In solution 1, all of them are packed in large cages, 6 * 18 = 108, 12 more than 96. That is to say, the original four cages are packed with 12 more, and each small cage is packed with 2 more than the big cage, 12 / 2 = 6, then the number of small cages is calculated. In solution 2, all of them are packed in small cages, 4 * 18 = 72, 24 less than 96, that is to say, the original six cages are packed with 12 less, every

How to solve the (x-3 / 1 x + 6) △ x = 5 / 4 equation?

（x-x/3+6）÷x=4/5
2x/3+6=4x/5
6=2x/15
x=45

If M and N are opposite to each other and a and B are reciprocal to each other, then 2 (M + n) - 3AB=______ ．

∵ m, n are opposite numbers to each other, ∵ m + n = 0, ∵ a, B are reciprocal numbers to each other, ∵ AB = 1, ∵ 2 (M + n) - 3AB = 2 × 0-3 × 1 = - 3

The rational numbers a, B and C are not zero, and a + B + C = 0, let x = ||||| / B + C + ||| / C + A + ||| / A + B, let X be 19th power-99x + 2000 =?

The new year is coming. In order to promote a certain commodity, the merchant will give a 75% discount on the current retail price, and then give a 20% discount. The retail price is 240 yuan, according to the price

(1) Let's suppose that this product is sold for X Yuan before discount
75%X*80%=240 400
(2) Let the purchase price be x yuan
（1+25%）X=240 192
（3）（400-192）/192=108%（108.3%）

Express the following numbers by scientific counting: 10000005700000001230000004350000
Use scientific counting to represent the following numbers
1,000,000 570,000,000 123,000,000,000 4,350,000
^^^^^^^^^This symbol

1,000,000=1×10^6
570,000,000=5.7×10^8
123,000,000,000=1.23×10^11
4,350,000=4.35×10^6

When a person works for 7 days, the boss has a section of gold and pays 1 / 7 of the workers every day. The boss can only cut this section of gold by 2 knives. How can he cut 1 / 7 of the gold every day
For a batch of parts processing, Party A works alone for 5 hours and has worked alone for 6 hours. How many parts of the task can be completed by two people working together for 2 hours?
For a pile of coal, 12.45 tons were used for the first time, 5.75 tons were used for the second time, and 6.2 tons were left. How many tons of coal was there? (calculated by fraction)
There are four numbers: A, B, C and D. their average is 13.5. The average of a, B and C is 12. The average of B, C and D is 15. The average of C, D and a is 14. What are a, B, C and D?
The average of four continuous natural numbers is 21.5, and the sum of these four numbers is (& nbsp; & nbsp;)
There are 12 students in the study group. In one test, Li Hong asked for leave. The average score of the other 11 students is 85. Li Hong's make-up score is higher than that of the other 12 students. 5?

First question:
The original title is a gold chain with seven rings
Cut the third ring
One section, one ring, one section, two rings, one section, four rings
On the first day, give him a ring
The next day, take one ring back and give him two
On the third day, give him another ring
On the fourth day, take back one ring and two rings and give him four rings
On the fifth day, give him another ring
On the sixth day, take one ring back and give him two
On the seventh day, give him another ring
Second question:
2 hours cooperation: 1 / 6x2 + 1 / 5x2 = 11 / 15
Remaining: 1-11 / 15 = 4 / 15
Third question:
2*（1/5+1/6)=11/15
249/20+23/4+31/5=239/10
(368*3+128）/4=308
This is an arithmetic sequence, and there are 11 terms. The average is equal to the sixth term of this sequence, that is, 23
（400-45*4)/5=44
The fourth question: according to the meaning of the question
A+B+C+D=13.5X4=54
A+B+C=12X3=36
B+C+D=15X3=45
C+D+A=14X3=42
therefore
A=（A+B+C+D)-(B+C+D)=54-45=9
B=(A+B+C+D)-(A+C+D)=54-42=12
D=(A+B+C+D)-(A+B+C)=54-36=18
C=36-(A+B)=36-(9+12)=15
The fifth question: 21.5 * 4 = 86 Yes (86)
The sixth question: if Li Hong's make-up exam score is x, there will be
5.5=X-（85*11+X）/12
Solution
5.5*12=12X-935-X
66=11X-935
X=91
Solution: the first 85 points are the average scores of 11 people except Li Hongji, so 85 * 11 is the sum of the scores of these 11 people. The sum of the scores plus the score X of Li Hong's make-up exam is the sum of the scores of 12 people. Divide by 12 to get the average score of 12 people. The average score of 12 people minus the score X of Li Hong's make-up exam is 5.5, and the equation is established
Note: in fact, there are answers on the Internet. These answers are all on the Internet. In other words, when you type these words, you can directly Baidu them~

As shown in the figure, in the parallelogram ABCD, 2Ab = ad, ab = AE = BF, verification: EC ⊥ FD

∵ quadrilateral ABCD is a parallelogram, ∵ ab ∥ DC, ad ∥ BC, ad = BC, and ∵ 2Ab = ad, ab = AE = BF, (transforming the multiple relation of edges into equal line segments) ∵ be = BC, ad = AF, ∵ e = ∥ BCE, ∥ f = ∥ ADF

1+2+3+4+5+6… +98+99+1+10

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