25x+y= 1200
Answer: x=48 y=47.
(2) 18x+23y=2303
74x-y= 1998
Answer: x=27 y=79
(3) 44x+90y=7796
44x+y=3476
Answer: x=79 y=48
⑷76x-66y = 4082
30x-y=2940
Answer: x=98 y=5 1.
(5) 67x+54y=8546
7 1x-y=5680
Answer: x=80 y=59
(6) 42x-95y=- 14 10
2 1x-y= 1575
Answer: x=75 y=48
(7) 47x-40y=853
34x-y=2006
Answer: x=59 y=48
(8) 19x-32y=- 1786
75x+y=4950
Answer: x=66 y=95
(9) 97x+24y=7202
58x-y=2900
Answer: x=50 y=98
( 10) 42x+85y=6362
63x-y= 1638
Answer: x=26 y=62
( 1 1)85x-92y =-25 18
27x-y=486
Answer: x= 18 y=44.
( 12) 79x+40y=24 19
56x-y= 1 176
Answer: x=2 1 y= 19.
( 13) 80x-87y=2 156
22x-y=880
Answer: x=40 y= 12.
( 14) 32x+62y=5 134
57x+y=2850
Answer: x=50 y=57
( 15) 83x-49y=82
59x+y=2 183
Answer: x=37 y=6 1.
( 16) 9 1x+70y=5845
95x-y=4275
Answer: x=45 y=25.
( 17) 29x+44y=528 1
88x-y=3608
Answer: x=4 1 y=93.
( 18) 25x-95y=-4355
40x-y=2000
Answer: x=50 y=59
( 19) 54x+68y=3284
78x+y= 1404
Answer: x= 18 y=34.
(20) 70x+ 13y=3520
52x+y=2 132
Answer: x=4 1 y=50.
(2 1) 48x-54y=-3 186
24x+y= 1080
Answer: x=45 y=99
(22) 36x+77y=76 19
47x-y=799
Answer: x= 17 y=9 1.
(23) 13x-42y=-27 17
3 1x-y= 1333
Answer: x=43 y=78
(24) 28x+28y=3332
52x-y=4628
Answer: x=89 y=30
(25) 62x-98y=-2564
46x-y=2024
Answer: x=44 y=54.
(26) 79x-76y=-4388
26x-y=832
Answer: x=32 y=9 1.
(27) 63x-40y=-82 1
42x-y=546
Answer: x= 13 y=4 1.
(28) 69x-96y=- 1209
42x+y=3822
Answer: x=9 1 y=78.
(29) 85x+67y=7338
1 1x+y=308
Answer: x=28 y=74
(30) 78x+74y= 12928
14x+y= 12 18
Answer: x=87 y=83.
(3 1) 39x+42y=533 1
59x-y=584 1
Answer: x=99 y=35
(32)29x+ 18y = 19 16
58x+y=2320
Answer: x=40 y=42
(33) 40x+3 1y=6043
45x-y=3555
Answer: x=79 y=93
(34) 47x+50y=8598
45x+y=3780
Answer: x=84 y=93
(35) 45x-30y=- 1455
29x-y=725
Answer: x=25 y=86
(36) 1 1x-43y =- 136 1
47x+y=799
Answer: x= 17 y=36.
(37) 33x+59y=3254
94x+y= 1034
Answer: x= 1 1 y=49.
(38) 89x-74y=-2735
68x+y= 1020
Answer: x= 15 y=55.
(39) 94x+7 1y=75 17
78x+y=3822
Answer: x=49 y=4 1.
(40) 28x-62y=-4934
46x+y=552
Answer: x= 12 y=85.
(4 1) 75x+43y=8472
17x-y= 1394
Answer: x=82 y=54.
4 1x-38y =- 1 180
29x+y= 1450
Answer: x=50 y=85
(43) 22x-59y=824
63x+y=4725
Answer: x=75 y= 14.
(44) 95x-56y=-40 1
90x+y= 1530
Answer: x= 17 y=36.
(45) 93x-52y=-852
29x+y=464
Answer: x= 16 y=45.
(46) 93x+ 12y=8823
54x+y=49 14
Answer: x=9 1 y=30.
(47) 2 1x-63y=84
20x+y= 1880
Answer: x=94 y=30
(48) 48x+93y=9756
38x-y=950
Answer: x=25 y=92
(49) 99x-67y=40 1 1
75x-y=5475
Answer: x=73 y=48
(50) 83x+64y=929 1
90x-y=3690
Answer: x=4 1 y=92.
3X+ 18=52 x=34/3
4Y+ 1 1 = 22y = 1 1/4
3X 9 = 5 x = 5/27
8Z/6=48 z=36
3X+7=59 x=52/3
4Y-69=8 1 y=75/4
8X*6=5 x=5/48
7Z/9=4 y=63/7
15X+8-5X=54 x=4.6
5Y*5=27 y=27/40
8x+2= 10 x= 1
x*8=88 x= 1 1
y-90= 1 y=9 1
2x-98=2 x=50
6x*6= 12 x= 1/3
5-6=5x x=- 1/5
6*x=42 x=7
55-y=33 y=22
1 1 * 3x = 60x = 20/ 1 1
8-y=2 y=-6
1.x+2=3
2.x+32=33
3.x+6= 18
4.4+x=47
5. 19-x=8
6.98-x= 13
7.66-x= 10
8.5x= 10
9.3 times =27
10.7x=7
1 1.8x=8
12.9x=9
13. 10x= 100
14.66x=660
15.7x=49
16.2x=4
17.3x=9
18.4x= 16
19.5x=25
20.6 times =36
2 1.8x=64
22.9x=8 1
23. 10x= 100
24. 1 1x = 12 1
25. 12x= 144
26. 13x= 169
27. 14x= 196
28. 15x=225
29. 16x=256
30. 17x=289
3 1. 18x=324
32. 19x=36 1
33.20x=400
3 1.2 1x=44 1
32.22x=484
33. 1 1 1x = 1232 1
34. 1 1 1 1x = 123432 1
35. 1 1 1 1 1x = 12345432 1
36. 1 1 1 1 1 1x = 1234565432 1
37.46/x=23
38.64/x=8
39.99/x= 1 1
40. 1235467564x=0
4 1.2x+ 1= -2+x
42.4x-3(20 times) =3
43..-2(x- 1)=4
44.3X+ 189=52 1
45.4Y+ 1 19=22 5
46.3X+77=59
47.4Y-6985=8 1
48.X=0. 1
49.5X=55.5 1)87x+2y=7733
20x+32y=4364
Answer: x=87 y=82.
2)44x+60y=6340
15x+42y=4 122
Answer: x=20 y=9 1.
3) 1 1x+74y=3548
7 1x+45y=4730
Answer: x=40 y=42
4)53x+54y=3229
70x+43y=2877
Answer: x= 1 1 y=49.
5)43x+9y=80 1
76x+ 16y= 1420
Answer: x=9 y=46
6)55x+32y=6 16 1
45x+84y= 10707
Answer: x=55 y=98
7)47x+27y=5396
94x+55y= 10870
Answer: x=70 y=78
8)33x+49y=4237
92x+2y=6428
Answer: x=69 y=40
9)0x+56y=3920
64x+90y=9244
Answer: x=46 y=70
10)9 1x+8y=4696
5 1x+66y=5 154
Answer: x=48 y=4 1 1 A beverage factory has developed two new drinks, A and B, both of which are raw materials. Each bottle of beverage A contains 20g of A and 20g of B, and each bottle of beverage B contains 30g of A and 20g of B. At present, the raw materials of A and B are 2800g each. The fourth level plans to produce AB*** 100 bottles to produce X bottles of beverage A. ..
(1) How many production schemes are there? Write the solution process.
(2) If the cost per bottle of a beverage is 260 yuan's last article and the next article, copy this page and link it to a friend's product forum. Nokia must have an answer to solve 80 math problems in the first day of the equation! The cost of each bottle of beverage B is 280 yuan, and the total cost of these two beverages is Y yuan. Please write the relationship between y and x and explain what value x takes to minimize the cost. The first math application problem 30 [mark the first math application problem] 1. It is known that the moving point A starts from the origin O to a 1, and the speed of A is V, then the speed of B is 4v for 3 seconds, and the distance between them is.
It is planned to transport 1240 tons of Class A goods and 880 tons of Class B goods to a certain place by freight train. It is known that there are 40 freight cars of two different specifications, A and B, hanging on this freight train for next semester. When commenting on the tags of documents to be classified (1), please abide by the law, pay attention to language civilization and give more support to document sharers. Submit comments on the first volume of the first day of junior high school Ctrl+ math problems. The use of A-type train cars is 6000 yuan per section, and the use of B-type freight cars is 8000 yuan per section.
(1) Assuming that the total cost of transporting this batch of goods is Y10,000 yuan, this truck is linked to the X section of the A-type vehicle. Try to write the relationship between y and X.
(2) If each A-type vehicle can armor up to 35 tons of Class A goods and 15 tons of Class B goods, and each B-type vehicle can armor up to 25 tons of Class A goods and 35 tons of Class B goods, and the number of sections of Class A vehicles and Class B vehicles is arranged according to this requirement, then * * * How many schemes are there to arrange vehicles? Math calculation problems in the first grade of junior high school
(3) Among the above schemes, which scheme has the least freight? What's the lowest freight?
3 Class A and Class B of the ninth grade in Guangming Middle School donated the same amount in the "Hope Project" donation activity, a pile of toys, each with three copies, leaving 59 copies; Each person is divided into five, and the last child is less than four. * * * How many toys are there? The child has a pile of toys, each toy is divided into three parts, and the remaining 59 parts; Everyone is above 300 yuan and below 400 yuan. It is known that one person in Class A donated to 6 yuan, the rest to 9 yuan, and one person in Class B donated 13 yuan. First, summarize the application of mathematical inequality-find a tutor, be a tutor-Yibin tutor. First, summarize the application of mathematical inequality: Example 65,438+0. Two stores in Class A and Class B sell the same goods at the same price, and the rest are donated to 8 yuan by the total number of students in Class A and Class B. Summary of Application Problems of Mathematical Inequality 1 A and B sell the same goods at the same price, and each store provides different preferential schemes: after buying the goods at 100 yuan in Store A, the goods purchased again are calculated according to the original price of Book 1.
An agricultural machinery service team has 15 technicians and assistants, and the number of technicians is twice that of assistants. The service team plans to give employees a bonus of 20,000 yuan, which will be paid according to the two standards of "technician's personal bonus" and "assistant's personal bonus", in which A ≥ B ≥ 80.
Ask for the number of technicians and auxiliary personnel of agricultural machinery service team.
Only so much, please adopt!