There are 20 workers in a parts manufacturing workshop. It is known that each worker can make 6 class a parts or 5 class B parts every day, and each class a part can make a profit of 150 yuan, and each class B part can make a profit of 260 yuan. Among these 20 workers, the workshop arranges x workers to make class a parts every day, and the rest to make class B parts (1) Write out the functional relationship between the daily profit y (yuan) and X (person) (2) If the profit of the workshop is not less than 24000 yuan per day, at least how many workers should be sent to manufacture part B?

There are 20 workers in a parts manufacturing workshop. It is known that each worker can make 6 class a parts or 5 class B parts every day, and each class a part can make a profit of 150 yuan, and each class B part can make a profit of 260 yuan. Among these 20 workers, the workshop arranges x workers to make class a parts every day, and the rest to make class B parts (1) Write out the functional relationship between the daily profit y (yuan) and X (person) (2) If the profit of the workshop is not less than 24000 yuan per day, at least how many workers should be sent to manufacture part B?

(1) If the workshop arranges x workers to manufacture part a every day, then there are (20-x) workers to manufacture Part B. y = 6 * 150 * x + 5 * 260 * (20-x) y = 900X + 26000-1300xy = 26000-400x. The functional relationship between the daily profit of the workshop and X is y = - 400X + 26000 (2) y = - 400X + 26000 > = 24

Ampere force formula
What is l in F = ILB? Is it the length of the cut magnetic induction line? If a square with side length a moves in the magnetic field, then l is 2A?

In F = ILB, l is the length of the wire used to cut the magnetic induction line. If a square with a side length of a moves in the magnetic field, then l is a

Please brother sister uncle aunt help ah
Given that the two diagonals of a parallelogram are m and N, and one side is 12, the possible values of M and N are?
A: 8 and 12 b: 10 and 14 C: 18 and 20 D: 10 and 38

The diagonal divides the parallelogram into four triangles, and the diagonal bisects each other
So half of the sum of the two diagonals is larger than the side length of the parallelogram,
The difference of half diagonal is less than the side length
A: (8 + 12) / 2 = 10 less than 12, the sum of the two wrong sides is greater than the third side
B: (10 + 14) / 2 = 12 is equal to the sum of 12 wrong two sides greater than the third side
C: (18 + 20) / 2 = 19 greater than 12 20 / 2-18 / 2 = 1 less than 12
D: 38 / 2-10 / 2 = 14 more than 12 (wrong) the difference between the two sides is smaller than the third side
So choose C

From the expression of Ampere force, is the following statement correct?
A. The angle between DF and B is arbitrary
B. The angle between DF and IDL can be arbitrary
C. DF, IDL and B are orthogonal to each other
D. DF is perpendicular to IDL and B

Correct answer D
The magnitude of Ampere force F = IBL * Sina A is the angle between current and magnetic induction line
The direction of the ampere force is perpendicular to both the magnetic field and the current, perpendicular to the plane determined by the magnetic induction B of the current I

Forget the title····
When a, the inequality (A-1) x ＞ 1, the solution set is x ＜ 1 / A-1?
If the positive integer solution of inequality 3x-m ≤ 0 is 1, then the value range of M is?
Given that the sign of 2-A and 3-2a are opposite, what is the value range of a?
It is known that there are three integer solutions for the system of inequalities (1) x-a ＜ 0, 2) 1-x ＞ 0?
Given that the solutions of the equations (1) 3x + 3Y = P + 1, 2) 4x + 2Y = - P + 3 satisfy x > y, then the value range of P is?
If the positive integer solution of inequality 3x + 1 < m is 1, then the maximum value of integer m is?
When m is, the solution of the equation 3x + m-2 (M + 2) = 3M + X is between - 5 and 5?
Find the natural number solution of the inequality system ① 2x-5 < 4-x, ② X-1 greater than or equal to 4x-7.
If the solutions X and y of the equations ① x + y = 3, ② x-2y = A-3 are all positive numbers, the value range of a is obtained.
It is known that the solution X of the equations (1) x-a = 1 + 3a, 2) x + y = - 7-a is a non positive number and Y is a negative number.
Question: (1) find the value range of a; (2) in the value range of a, when a is an integer, the solution of inequality 2aX + x > 2A + 1 is x < 1?

1、a

Xiao Wang's family has a TV set, a refrigerator, a washing machine and four electric lamps of the same specification. The working current is 200mA, 400mA, 1a and 0.18a (one electric lamp). If these electric appliances are used at the same time, the current in the trunk road is 200mA______ A．

When a TV works, the current is 200mA = 0.2A, when a refrigerator works, the current is 400mA = 0.4A, and when four electric lamps of the same specification work, the current is 0.18a × 4 = 0.72a. If they work at the same time, the total current in the trunk road is I = 0.2A + 1A + 0.4A + 0.72a = 2.32a

Given the three points o (0,0), a (- 1,1) and B (- 1,0) on the plane rectangular coordinate system, rotate △ ABO 135 ° clockwise around point O, then the coordinates of corresponding points A1 and B1 of points a and B are A1 and B1 respectively______ ，B1______ ．

∵ A's coordinates are (- 1,1), ∵ OA = 2, and A1 is on the positive half axis of X axis, ∵ A1's coordinates are (2,0), ∵ B's coordinates are (- 1,0), ∵ ob = 1, and B1 is on the angular bisector of the first quadrant, ∵ B1's coordinates are (22,22)

Electric power of household appliances
The name plate of the electric cooker is marked with the word "220V 1100W", and the electric kettle is marked with the word "220V 550W". One day, during the peak period of electricity consumption, the electric cooker and the electric kettle are used to cook porridge and boil water at the same time. Their actual working voltage is 220V, and it takes 11min for the main shaft to boil water. How much heat does the electric cooker and the electric kettle release?

They are all rated voltage, so the heat can be calculated by this formula
Q=P*t
Q total = P pot * t + P pot * t
=1100W*11*60s + 550W*11*60s
=1089000J

If the average of x1, X2, X3 is 4, then the average of X1 + 1, X2 + 2, X3 + 3 is 4______ ．

The average of ∵ x1, X2, X3 is 4, ∵ X1 + x2 + X3 = 3 × 4 = 12, ∵ X1 + 1, X2 + 2, X3 + 3 is: (x1 + 1 + x2 + 2 + X3 + 3) △ 3 = 6

150 color TV sets were sold in a shopping mall in January_____________ ._____ How many refrigerators do you sell?
150x (1 + 1 / 4)) according to the formula, what is the supplementary condition?
150 (1-15%) according to the formula, what is the condition?
What's on the line

150x (1 + 1 / 4)) according to the formula, what is the supplementary condition?
A: refrigerators sell 1 / 4 more than color TV sets
150 (1-15%) according to the formula, what is the condition?
A: the number of color TV sets sold is 15% less than that of refrigerators sold