For the first problem of 1QB, if the set of inequality (3a-2) x ＜ 1 about X is x ＜ 2, then the value of a is_____

First of all, if 3a-2 ＜ 0, the solution set will be x greater than a number, which is inconsistent with the meaning of the question. If 3a-2 = 0, the solution set will be r, so 3a-2 ＞ 0 means a ＞ 2 / 3. At this time, the shift term has x ＜ 1 / (3a-2). If the meaning of the question is 1 / (3a-2) = 2, a = 5 / 6 ＞ 2 / 3, which is consistent with the meaning of the question, the answer is a = 5 / 6

RELATED INFORMATIONS

1. 1、 (x-1) (x + 2)
2. Mathematics problem! Solving inequality (process) 4x-2≥5x+7 x+15>2x-3 6（x+2)≤3x-1 5（x+2)≤6x+1 3x-1≥6x-2 5(x+2)3x+20 x-5/4 +1≤6x-2 3x+4>x/2 -1
3. The solution of x square + X-6 < 0
4. How to solve the problem of x square - x ＞ 6
5. X-x square + 6 < 0
6. 1. Given the equation x ^ 2-5x-1 = 0 about X, find (1) x ^ 2 + 1 / x ^ 2 (2) x + 1 / X Given x + 3Y + 5Z = 0 2x + 3Y + Z = 0 XYZ ≠ 0, find (2y-x) (2Y + x) △ Z ^ 2 (Z ^ 2 is the square of Z) 3. Factorization: (1) (X-Y + Z) ^ 2 - (x + Y-Z) ^ 2 (2)x^3+6x^2+11x+6
7. To solve the equations: 3x + 4Y = 115x − y = 3
8. Mathematical problems (- 8.2) + 10 + 2 + (- 1.8), (0.8) + (0.7) + (- 2.1 = 0.8 + 3.5) 1 / 4 + (- 2 / 3) + 4 / 5 + (- 1 / 4) + (- 1 / 3) in addition, who has the answer to the mathematics exercise book of the second semester of grade 6? I want 5.5.6 from Shanghai OK, I'll give 100. If I can't play that much, it's 5.4
9. 3 * 3-1 * 1 = 8 * 1 5 * 5-3 * 3 = 8 * 2 7 * 7-5 * 5 = 8 * 3... How to describe and prove such a rule in words 3 * 3-1 * 1 = 8 * 1 5 * 5-3 * 3 = 8 * 2 7 * 7-5 * 5 = 8 * 3... How to describe and prove such a rule in words?
10. 5^6*5^-3=5^6*1/5^3=5^6/5^3=5^6-3=5^3=5^6+(-3) 7^4/7^-2=7^4/1/7^2=7^4*7^2=7^4+2=7^6=7^4-(-2) 1) Is the calculation of the above two cities correct? (2) According to the above operation process, do you have any new understanding of a ^ m * a ^ n = a ^ m + n (m, n are positive integers), a ^ m / A ^ n = a ^ M-N (m, n are positive integers, and M > N, a ≠ 0)? (3) It is to calculate with the new knowledge you get: ① the - 3rd power of 3 * the - 2nd power of 3; ② the - 7th power of 8 / the - 4th power of 8
11. 1 + 1 / radical 2 + 1 / radical 3 +. + 1 / radical n I'm very grateful to so many warm-hearted people, but I said that I'm a freshman in high school and I still can't use induction, but I'm very grateful
12. A mathematical problem of inequality in senior one If two angles a and B satisfy - π / 2
13. Mathematical problems of inequality group The price and quantity of goods bought by the two stores are the same. Store a: after purchasing 200 yuan goods, you can apply for a 20% discount card, and later you can enjoy a 20% discount when purchasing goods; store B can apply for a 10% discount card when purchasing 100 yuan goods, and later you can enjoy a 10% discount when purchasing goods At the beginning, we need to use the system of inequalities to solve the problem, not to discuss it by classification,
14. Inequality and inequality group mathematical problems In a competition, a shooter hits 54 rings in the first six shots. If he wants to break the record of 91 rings (10 times), how many rings can he have in the seventh shot? (2) if the seventh shot is 8 rings, how many times must he hit 10 rings in the last three shots to break the record? (3) if the seventh shot is 10 rings, Do you have to hit 10 rings at least once in the last three shots to break the record?
15. If the inequality system 3x − 1 ≥ a + 12 − x > 1 − 2A has no solution, then the value range of a is______ ．
16. Inequalities and systems of inequalities A rectangular football field is xcm in length and 70m in width. If its perimeter is greater than 350m and its area is less than 7560m2, the value range of X is obtained
17. In the "beautiful Urumqi" activity, a community decided to use 9000 pots of chrysanthemum and 8100 pots of sunflower with a and B gardening styles, a total of 100 flowers were placed in the community. The flowers required for each gardening style are shown in the following table: & nbsp; & nbsp; need chrysanthemum (pot) need sunflower (pot) & nbsp; a shape & nbsp; & nbsp; 100 & nbsp; 60 & nbsp; A B shape & nbsp; 80 & nbsp; Based on the above information, let's set X horticultural models of type A to answer the following questions: (1) please write out the inequalities that meet the meaning of the problem and find out the solution set; (2) if the cost of matching a horticultural model of type A is 600 yuan and that of matching a horticultural model of type B is 800 yuan, try to determine how many of the models of type a can make the cost of the 100 horticultural models the lowest
18. Solve the system of inequalities x + 1 ＞ 0. X ≤ (X-2 / 3) + 2, and write the largest integer solution of the system of inequalities
19. Find the sum of all integer solutions of the system of inequalities 5 ＞ 2 (1 − x) − 13X ≤ 23 − X
20. It is known that the derivative of F (x) is 2x ^ 2-4ax-3. If f (x) has and only has one extreme point in (- 1,1), the value range of a is obtained