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Cut off a corner of a square, the remaining figure may be a quadrilateral, right or wrong?
If you cut off a corner and consider the diagonal as the dividing line, it may be a triangle or a Pentagon, but if you cut through a vertex of a square, you may get a quadrilateral
In a 15 decimeter long, 12 decimeter wide and 14 decimeter high cuboid water tank, there is 10 decimeter deep water. If a 30 cm long cube iron block is sunk in the water, the water does not overflow. Then how many decimeters is the water depth in the water tank?
30cm = 3DM, height of rising water: (3 × 3 × 3) △ 15 × 12) = 27 △ 180 = 0.15 (DM) 0.15dm + 10dm = 10.15 (DM). A: then the water depth in the water tank is 10.15m
What is the simple operation of 2.22 × 334 + 22.2 × 66.6
2.22×334+22.2×66.6
You can do that
22.2×66.6=2.22×666
therefore
2.22×334+22.2×66.6=2.22×334+2.22×666=2.22(344+666)=2.22×1000=2220
You can also make the left 2.22 × 334 = 22.2 * 33.4
0.18 square decimeter = () square centimeter
Hello
1 decimeter = 10 cm
1 square decimeter = 100 square centimeter
So 0.18 square decimeter = (18) square centimeter
Storybooks are 5% more than science and technology books. What percentage of science and technology books are storybooks?
Story books are one fifth more than science and technology books, and science and technology books are less than story books?
In terms of percentage, I think it's 120%, 20% more than 100%, which is exactly one fifth
Xiao Ming went to the bookstore to buy a set of popular science books (upper and lower volumes). When he paid, he left out the zero in the unit price of the second volume and was ready to pay 27 yuan. At this time, the aunt of the salesperson said, "it's only right to pay 54 yuan." excuse me, how much is the second volume of this set of popular science books?
What is length? What are the units of measurement? Specify the size of the unit of length (for example)
== this question
Length unit refers to the basic unit for measuring space distance. It is the basic unit formulated by human beings for regulating length. Its international unit is "meter" (symbol "m")
We usually use meter, centimeter, millimeter (scale unit on ruler)
And the kilometer, which is often said, is 1000 meters
Then there are astronomical light years, which are also length units
In addition, nano is also ~ 1nm = 10 ^ - 9m
Primary school grade 6 Volume 2 Lesson 18 "beauty across a century" main content
This paper describes the scene of Madame Curie giving an academic report at the French Academy of Sciences. It highlights Madame Curie's beautiful image and great achievements in front of readers. Then it describes Madame Curie's attitude and practice in front of fame and wealth. Finally, it affirms Madame Curie's personality because of Einstein's words
What is the greatest common factor of 16 and 18___ The least common multiple is___ ．
16 = 2 × 2 × 2 × 218 = 2 × 3 × 3, so the greatest common factor of 16 and 18 is 2, and the least common multiple is 2 × 2 × 2 × 2 × 3 × 3 = 144
How to solve 2x-6 / x + 6-2x 5 = 1
x/(2x-6)-5/(2x-6)=1
Double 2x-6
x-5=2x-6
x=1
The fractional equation needs to be tested
By testing, x = 1 is the solution of the equation
RELATED INFORMATIONS
- 1. If a & # 178; = B & # 178;, then a = B is true or false. If a proposition is true, please prove it. If a proposition is false, please give counter examples
- 2. In a box, there are 20 balls in red, yellow and blue, each with at least a few balls, so that two pairs of balls in the same color can be guaranteed? At least how many balls can be written Then, three pairs of balls of the same color can be guaranteed? Four pairs? What rules do you find? (the so-called ball of the same color refers to two balls in each team of the same color, not all the balls taken out of the same color)
- 3. Xiao Ming's father is very similar to Xiao Ming
- 4. Xiao Ming is in a heavy mood because he knows he is wrong
- 5. The classroom is very quiet, only the teacher is giving a lecture On New Year's day, our family went to the artificial lake park. In the afternoon, as soon as we entered the park, we saw boats wandering on the lake and heard people's laughter
- 6. After school, the students come out of the classroom in succession
- 7. There is no one in the classroom, only Li Yan is doing her homework seriously
- 8. There is no one in the classroom, he is still in the classroom dedicated to learning to modify the sick sentences
- 9. Through reading, the students broaden their horizons
- 10. Reading extracurricular books often can improve our knowledge and correct the wrong sentences
- 11. The average of five numbers is 60. If one of them is changed to 80, the average will be 70. What is the original number?
- 12. Finding the indefinite integral of 1 / sqrt (x ^ 2 + 1)
- 13. LG (x + 2) = 2y-2 What is the calculation process of LG (x + 2) = 2y-2 x = e ^ (2y-2) - 2 Note: e ^ (2y-2) means the power of 2y-2 of E What I don't know is how e ^ LG (x + 2) becomes x + 2 after taking logarithm on both sides at the same time, and how e and LG hedge (cancel) with that formula? rescue
- 14. What is the simple method of 173 * 73-73 * 73
- 15. If the polynomial 2x2-3x + k-kx2 + 4kx-4 is a quadratic binomial without constant term, then the quadratic binomial is______ ．
- 16. General term formula of known sequence 3,2,6,4,9,8,12,16 halo
- 17. Organize a spring outing, and rent 8 buses and CMBS, with 60 passengers for each bus and 40 passengers for each CMB. The bus is more than CMB in total How many buses and minibuses are there?
- 18. How to factorize a ^ 2-5A 3
- 19. The bus and truck start from two places at the same time, and run in opposite directions. The known speed ratio is 5:7. The meeting place is 30km away from the midpoint of two places. Find the distance between two places
- 20. 4 out of 5 * 7 out of 9 * 5 out of 8 = simple calculation