If the inequality 2 + 2x about X
It should be a positive integer, the solution is 1,2
Then x < (m-2) / 2
Because the positive integer solution is 1,2
SO 2 < (m-2) / 2 ≤ 3
6<m≤8
If the inequality 2x-1 > 3 (x-1), X
2x-1>3(x-1)
2x-1>3x-3
x
RELATED INFORMATIONS
- 1. Given m (4a-8, a + 3) in the plane rectangular coordinate system, the coordinates of point m are obtained according to the following conditions: (1) the distance between point m and X axis is 2. (2) the coordinate of point n is (3. - 6), and the line Mn ‖ X axis To be specific, every step should be taken. Good reward
- 2. In the plane rectangular coordinate system, if the distance between point m (1,3) and point n (x, 3) is 5, then the value of X is 0___ .
- 3. Given the point a (- 5,3), point B (- 3,5), point C on the x-axis and point D on the y-axis in the plane rectangular coordinate system, which is connected with ABCD, what is the minimum circumference of rectangular ABCD
- 4. In the plane rectangular coordinate system, point a (0,4) B (3,4) C (6,0), moving point P starts from point a and moves downward on the y-axis at a speed of 1 unit / second Starting from point C, the moving point Q moves to the left on the x-axis at a speed of 2 units per second, passing through point P as RP, perpendicular to the y-axis, intersecting ob with R, connecting RQ. When point P coincides with point O, both moving points stop moving. Let the time of motion be T seconds. (1) if t = 1, find the coordinates of point R; (2) if 3
- 5. In the plane rectangular coordinate system, the following points a (2,1) B (0,1) C (- 2,3), D (4,3) are described, and each point is connected by line segments to form a quadrilateral ABCD 1. What special figure is quadrilateral ABCD? 2. Find a point P in the plane of the quadrilateral ABCD so that △ APB, △ BPC, △ CPD, △ APD are isosceles triangles. Please write the coordinates of point P
- 6. Draw the following points a (2,1), B (0,1), C (- 4, - 4), D (6, - 4) in the plane rectangular coordinate system, and connect them with line segments to form a quadrilateral ABCD (1) What special quadrilateral is ABCD? A:___ (2) Find a point P in the quadrilateral ABCD so that △ APB, △ BPC, △ CPD, △ APD are isosceles triangles, and request the coordinates of point P
- 7. As shown in the figure, the position of right angled trapezoid oabc in the plane rectangular coordinate system is as follows: ab ∥ OC, B (5,3), ab = BC. D (x, 0) is the moving point on OC (not coincident with O and C), DP ⊥ X axis intersects PC at point P, connecting Pb (1) The coordinates of point C are - (2) (1) as shown in figure (1), use the algebraic expression of X to represent the coordinates of point P, and find the value of X when △ PBC becomes a right triangle ② When point P is the intersection of trapezoidal diagonal AC and Bo (as shown in Figure 2), find the value of X
- 8. If the point a (2m + 1,3-m) is symmetric about X axis in the fourth quadrant, then the value range of M is_______
- 9. If point m (3a-9,40-2a) is in the second quadrant and the distance from point m to X axis is equal, try to find the coordinates of point M
- 10. If point a (3x + 4,5-2x) is on the bisector of the second and fourth quadrants, find the coordinates of point a
- 11. If there are four positive integer solutions to the inequality 2x-3 ≤ m, then the range of M is______ .
- 12. On the inequality system of X: 2x + 5 / 3 > X-5, x + 3 / 2 < x + A has only five positive integer solutions, then the value range of a The answer is - 6 < a ≤ - 11 / 2,
- 13. It is known that the solution set of the inequality MX greater than n about X is x less than three fifths, and the solution set of the inequality (2m-n) x + m-5n > 0 about X is obtained Ah, but
- 14. English translation
- 15. Do you mind if I smoke here
- 16. Smoking is harmful to health, quitting smoking can reduce the harm to health
- 17. No parking, no smoking, no taking pictures
- 18. This person? For English translation
- 19. Please don't smoke in the carriage
- 20. I often advise my father not to smoke