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If the equation (m-2) x | m | - 2 + 3 = 0 is a linear equation with one variable, then the value of M is () A. Neither ± 3B. 3C. - 3D
∵ the equation (m-2) x|m| - 2 + 3 = 0 is a linear equation with one variable, and |m| - 2 = 1, and m-2 ≠ 0, the solution is m = ± 3, so a
The equation (A-2) x | a | - 1 + 3 = 0 is a linear equation of one variable with respect to x, then a=______ ．
According to the characteristics of one variable linear equation, it is obtained that | a | - 1 = 1, A-2 ≠ 0, the solution is a = - 2, so the answer is: - 2
If the equation (m-1) x + (4m + 3) x + 5 = 0 about X is a linear equation with one variable, the condition m should satisfy is——————————
M should satisfy the condition that M = 1
A rectangular swimming pool will be built in the sports center, 50 meters long, 15 meters wide and 1.8 meters deep. Tiles will be laid on the four walls and the bottom of the swimming pool
If you use about 20 tiles per square meter, how many tiles does the swimming pool need
If about 20 tiles are used per square meter, how many tiles does the swimming pool need
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- 1. A swimming pool is 50 meters long, 25 meters wide and 2.5 meters deep. How many square meters of ceramic tiles should I buy at least for the surrounding and bottom of the pool
- 2. The length of a swimming pool is 50 meters, the width is 25 meters, and the depth is 2 meters. How many cubic meters of soil have been excavated to build this swimming pool? Put a layer of cement on the side and bottom of the pool. What is the area of cement? (formula)
- 3. A school wants to build a cuboid swimming pool, which is 50 meters long, 25 meters wide and 2.5 meters deep. If the tiles of 2 decimeters long are pasted at the bottom and around, at least a few pieces are needed Enough? If you inject 10 cubic meters of water per minute How many hours does it take to make the water depth 1.2 meters?
- 4. The cuboid swimming pool is 50 meters long, 25 meters wide and 2 meters deep. If the inner wall of the swimming pool is covered with tiles, how many tiles are needed with a side length of 5 decimeters?
- 5. In a swimming pool 20 meters long, 8 meters wide and 1.5 meters deep, tiles are pasted. The side length of a square tile is 5 decimeters. How many tiles do you need?
- 6. A swimming pool, 50 meters long, 20 meters wide, 4 meters deep. Now we need to paste 2 decimeter square tiles in this swimming pool. How many tiles do we need to paste this
- 7. The playground will build a cuboid swimming pool, 40 meters long, 10 meters wide and 1.5 meters deep. The walls and floor of the pool will be paved with ceramic tiles, if 25 tiles are used per square meter How much is it?
- 8. Every day, the swimming pool is 25 meters long, 10 meters wide and 1.6 meters deep. Build ceramic tiles around the swimming pool and at the bottom of the pool. If you use a square with an area of 1 square decimeter, you need ceramic tiles
- 9. A swimming pool is 50 meters long, 25 meters wide and 3 meters deep on average. If you want to stick tiles on the four walls of the swimming pool, what is the area of tiles? It's clear,
- 10. Build a rectangular swimming pool, 30 meters long, 10 meters wide and 1.5 meters deep. The four walls and bottom of the pool are paved with ceramic tiles. If there are 25 ceramic tiles per square meter, How much is the process
- 11. The two sides of the equation x - 5x + 6 = 0 are
- 12. If the equation (a + 4) x | a | - 3 + 2 = 0 is a linear equation with one variable, then the value of a is_____ .
- 13. -2 is the solution of the following one variable linear equation: A, 2x + 6 = 2 B, x + 7 of 4 = - 6 and 1 / 2 C, x 2 of 2 + 2 of 2 = - 2
- 14. The equation about X (m-1) the square of x-3x-4 = 0 when the equation has two real roots, the value range of M//
- 15. If the point (m, n) is on ax + by + 2C = 0, find the minimum value of m ^ 2 + n ^ 2
- 16. On palindrome problem: find and output the number m between 11 and 999, which satisfies that m, M2 and M3 are palindrome numbers, while (k) return0return 1 int jsValue(long n) {long int s=0,k; k=n; while(k) { s=s*10+k%10; k/=10; } if(s==n) return 1; if(s!=n) return 0; } What does "while (k)" mean? If s = = n, return N1, return N1 is what step to perform
- 17. It is known that the two right sides of a right triangle are l and M. the hypotenuse is n.. And l.m.n is a positive integer.. L is a prime number! Prove that 2 [L + m + 1] is a complete square Let me understand! There is really a hurry! A points used up! Better than good consciousness! As good deeds!
- 18. If the real number m, N, x, y satisfies M2 + N2 = a, X2 + y2 = B (a ≠ b), then the maximum value of MX + NY is the best to use the basic inequality That 2 is the square, the answer is the root, AB, not anything else
- 19. Given the linear function y = (2-m) x-2m & sup2; + 8, when the value of M is, the image passes through the point (- 1,5)
- 20. Given the inverse scale function y = k of X (K ≠ 0) and the first-order function y = - X-6, if the images of the first-order function and the inverse scale function intersect at the point (- 3, m), the values of M and K can be obtained