Finding the system of inequalities-1

Finding the system of inequalities-1

-1 ≤ (3-2x) / 2 ≤ 2 - 2 ≤ 3-2x ≤ 4 - 5 ≤ - 2x ≤ 1 - 1 / 2 ≤ x ≤ 5 / 2, so the integer solution of the inequality is 0,1,2 2x + 1 & lt; 8 ① 3 (x + 1) ≥ 5x-9 ② the solution is: X ＜ 7 / 2 from ① and: X ≤ 6 from ②. To sum up, the positive integer solution of X ＜ 7 / 2 inequality system is: 1,2,3

If the system of inequalities {9-5x / 4 > 1, X

X is obtained by solving the equations

|How to solve the inequality of X + 3 | + | X-2 | < 7?

Is x > 0

Compulsory five inequality application questions [detailed explanation]
In 2010 Shanghai World Expo, in order to ensure the traffic order of a certain road section during the Expo, the traffic department decided to detect the traffic flow of a certain road section in order to formulate a reasonable traffic restriction scheme. The functional relationship between the traffic flow y (thousand vehicles / hour) and the average speed V (km / h) is y = 144v / V square - 58V + 1225 (V greater than 0)
(1) In this period, when the average speed V is, what is the maximum traffic flow?
(2) If the traffic flow is required to exceed 9000 vehicles / hour in this period, what is the range of the average vehicle speed

(1) Y = 144v / V squared - 58V + 1225 numerator and denominator divided by V. the final answer is y = 12

A. B is 546 km away from the two places. The two passenger trains start from the two places at the same time and meet each other in three hours. It is known that the speed of car a is three times that of the existing one····
A. B is 546 km away from the two places. The two passenger trains start from the two places at the same time and meet each other in three hours. It is known that the speed of car a is three times that of car B. how many kilometers does car a travel per hour? The faster the better,

Closing speed 546 △ 3 = 182
The speed of car a is 182x3 △ 3 + 1 = 542 △ 4 = 135.5km/h

Solving inequality: 3 - (x-4 of 4) > 1 + (3 of 8 (x + 1))

3 - (x-4 / 4) > 1 + (3 / 8 (x + 1))
Multiply 8 to get 24-2 (x-4) > 8 + 3 (x + 1)
24-2x+8＞8+3x+3
-2x-3x＞11-24-8
-5x＞-21
x＜4.2

On the map marked with a scale of 1:4000000, the distance between a and B is 9 cm. A freight car and a passenger car run from a and B at the same time
It is known that the speed ratio of passenger car to freight car is 5:4

4000000cm=40km
9*40=360kc
The speed of passenger car is 5 x and that of freight car is 4 X
(5x+4x)*2=360
x=20
So the bus speed is 5x = 5 * 20 = 100km / h

Given that vector a = (1, - 2) vector b = (- 1, λ), when the angle between vector a and vector B is obtuse, calculate the range of λ
To answer in detail plus points!

The angle between vector a and vector B is obtuse
Then ab

There are 146 people in the first team and 88 people in the second team. How many people can be transferred from the first team to the second team to make the two teams equal?

146 - (146 + 88) / 2 = 146-117 = 29

In 1 × 2 × 3 × 4 × How many continuous zeros are there at the end of the product of × 999 × 1000 natural numbers?

1) There are 11 zeros in numbers: (10, 20, 30.100), 11 zeros in 10 numbers (110120,... 200), (810820... 900) and 11 zeros in 910920... 1000. There are a total of 9 * 11 + 12 = 111 zeros. There are 100 zeros contributing. 2) 010 = 2 * 5 obtained by multiplying two numbers. In order to get zero, I