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How to deduce the famous Hellen's formula (Hailong's formula) from Qin Jiushao's formula of "three oblique quadrature"? But don't exceed the knowledge level of grade two
What is the meaning of [number]!
When measuring objects, we often get numbers that are not integers. The ancients invented decimals to supplement integers. Decimals are a special form of decimal fractions. All fractions can be expressed as decimals, except infinite non cyclic decimals. Irrational numbers are infinite non cyclic decimals
Mathematics of grade four in primary school: what is the meaning of quantitative relation?
1, the number of each copy × copies = the total number of copies △ the number of each copy = the total number of copies △ copies = the number of each copy 2, 1 multiple × multiple = several times, several times △ 1 multiple = several times, several times △ multiple = 1 multiple 3, speed × time = distance △ speed = time, distance △ time = speed 4, unit price × quantity = total price of total price △ unit price = total price of quantity △ quantity = unit price 5, Work efficiency × work time = total amount of work △ work efficiency = work time, total amount of work △ work time = work efficiency 6, addend + addend = sum - one addend = another addend 7, subtracted subtracted = difference, subtracted difference = subtracted difference + subtracted = subtracted 8, factor × factor = product △ one factor = another factor 9, Divisor / divisor = quotient divisor / quotient = divisor quotient × divisor = divisor
Adjectives describing people's appearance in English
Adjectives describing people's appearance
The more, the better
Choleric is irritable
He who is slow is not in a hurry
Melancholy
Sanguine is optimistic
Easygoing
Compassionate
Good natured
Bad tempered
Optimistic is optimistic
Pessimism is pessimistic
Beautiful smart
Pretty
Handsome
Cute
Ugly is ugly
Examples of adjectives describing appearance and characters in English
English!
My own forehead: appearance: tallthinheavylong / blond / Brown / straight / curly hair and some beautiful short fat retty personality: going under standing as going smart serious clear enough to be tired
Who knows people's character, appearance adjectives?
Melancholy sanguine optimistic easy going easygoing easygoing easygoing compassionate good natured compassionate good bad temped optimistic pessimist
English adjectives that describe appearance,
The more, the better
English about appearance
I am very near sighted and wearing a pair of contact lens now
I've been wearing glasses since I was a high school student
I dyed my hair red by myself
I got this suntan swimming at the beach the other day
Am I a little too short for my age?
According to my height, what is my standard weight?
I take size seven shoes
I have black hair, brown eyes, and a hook nose
I started to lose a bit of hair since I turned forty
My hair turned gray after I was fifty
I was already more than one meter and seven meter tall when I was aged two
Words for girls
What words should be used to describe a cold and beautiful woman
Leng Yan
Ice beauty
Iceberg beauty
Can you use one word to describe a girl?
A girl from Hunan is going to Yantai for University. When she was a freshman, she went to Yantai with her luggage. He often went to Shenzhen alone (to find friends). She was only 19. I admire her very much and would like to use a word to describe her,
Independent, courageous, generous, outstanding, different
RELATED INFORMATIONS
- 1. Primary school mathematics quantity relations (I want all! Super detailed!) fast~~
- 2. Use letters to represent numbers: (1) the difference between a and B is 6; (2) the quotient of B is 3
- 3. 19 degrees 29 minutes + 78 degrees 27 seconds =?
- 4. The equations solve the following problems and list the quantitative relationships (1) The carrying capacity of a car is 7.5 tons. How many times does it take to transport a batch of goods weighing 60 tons? (2) it is known that the circumference of a square is 6.8 decimeters, and its side length can be calculated. (3) a maglev train can travel 315 kilometers per hour, and its speed is 3.5 times that of an ordinary train. How many kilometers can an ordinary train travel per hour?
- 5. There are several problems that can't be solved. To solve them, first complete the quantitative relationship and then solve them 1. A pair of trousers is 75 yuan, which is 3 / 4 of the price of a coat. How much is a coat? The quantity relation is () × 3 / 4 = () the formula is: (to solve the equation and suppose) 2, How many tons was the total wheat output of Shishan Township last year? The quantitative relationship is () × 2 / 5 = () and the formula is: (to solve the equation and suppose)
- 6. Column equation to solve the problem, to the number of relations! Fifth grade students rent some boats. If each boat takes 4 people, there will be 5 more; if each boat takes 5 people, there will be 4 vacancies. How many students and how many boats are there?
- 7. Fill in with relevant words Use that conjunction? He always wanted to humiliate Lincoln. He couldn't help clapping his hands
- 8. Fill in the blanks with the answers
- 9. (people's Education Press) fifth grade volume 1 error prone problems in Mathematics
- 10. Sixth grade volume I mathematics Yangtze River exercise book side 38 I will think about the answer
- 11. The first day of junior high school
- 12. A mathematical problem of finding rules A series of numbers are known: 2, 9, 16, 23 (1) Write the nth number in these sequences; (2) Is 128 a number in this sequence? If so, what is the number?
- 13. If the new stipulation "!" is a kind of operation, and there are ① 1! = 1, ② 2! = 2 * 1, ③ 3! = 3 * 2 * 1, find (n + 1)! / (n-1)!
- 14. Fill in the blanks below 1+2+1=4； 1+2+3+2+1=______ ； 1+2+3+4+3+2+1=_______ ；1+2+3+4+5+4+3+2+1=_______ ； 1+2+3+… +100+99+… +1=_______ ； 1+2+3+… +n+(n-1)+… +1=_______ .
- 15. That's the price=*** Profit=*** Profit margin=**** There are also people who save money
- 16. Some problems on the representation of numbers by letters 1. Given x + y = 3, the value of 7-2x-2y is () 2.(M+N)-( ）=2M-P. 3. It is known that a is a two digit number with ten digit number x and one digit number y, and B is a two digit number with ten digit number y and one digit number x, then A-B = () (expressed by algebraic formula containing X and y)
- 17. five 1. How is the atmosphere distributed on the earth's surface? When a place is heated, how is the atmosphere near the ground and above it heated? Does the atmosphere near the ground expand and rise when heated, or does it rise all the time,
- 18. A ship crossed the 180 ° meridian in five minutes at 10:00 on March 22, Beijing time (120 ° e, District 8 East). What's the time of the ship's position Or more than three
- 19. How to calculate the geographical time zone?
- 20. Exponential algorithm is the power of rational number. How to simplify the operation, such as multiplication