High score rewards! Calculate these math problems, and I ll count you as a cow! 80

There are x people in class A, y people in class B, and z people in class C.

6+7*2+(x-1-2)*11=6+8*3+(y-1-3)*10+28

6+8*3+(y-1-3)*10=4*2+7*6+(z-2-6)*9+101

Simplification 11x-10y=31

10y-9z=89

400 6+7*2+(x-1-2)*11 550400 6+8*3+(y-1-3)*10 550400 4*2+7*6+(z-2-6)*9 550, i.e. 413 11 x 563 11

41≤y≤56

154/3≤z≤572/9

Cut x, y, z are all integers.

x=51 y=53

z=49 51 in Class A, 53 in Class B, and 49 in Class C.

Please calculate the result by yourself.

Sixth, please draw!

Degree. Please calculate the results yourself.

6.I don't know how to do it.

Wait. Question 6: There are no shadows.

1.To determine the sugar yield of sugarcane is to find the weight of sugar in the total weight of sugarcane. ( Right) 2Because the numerator of the percentage can be an integer or a decimal greater than 100, the percentage can be found at most than 100%. (Right).

3.There are 97 products qualified and 3 unqualified, with a pass rate of 97%. (right)4

When 2 kg of sugar is dissolved into 50 kg of water, the sugar content of the sugar water is 4%. (False) Application Questions: 1

The sugar mill processed 7,200 kilograms of sugar in May, using 60 tons of sugarcane to find the sugar yield of sugarcane.

Note that the name of the unit) 7200 (60 1000) = 12%2There were 40 freshmen who practiced shooting live ammunition, each firing 3 bullets, and the result was 100 rounds.

3. A sugar factory uses tons of sugarcane to extract sugar, and the slag is 2112 kg. Find the sugar yield of sugarcane.

True or False Fill in () for true or false questions:

1.The sugar yield of sugarcane is to find the weight of sugar in the total weight of sugarcane. （2.Because the numerator of the percentage can be an integer or a decimal greater than 100, the percentage can be found at most than 100%. （

3.There are 97 products qualified, 3 are not in line with the silver standard, and the pass rate is 97%. （4.Dissolve 2 kg of sugar into 50 kg of water, and the sugar content of Feng and Peng sugar water is 4%. （

1) 1/2) - (1/6)] =

So it's 8 pcs.

4) Value-added 10,000) Buy a house 25-7 = 18 (10,000) loan 60-(25-25 5% 10,000).

6) Initially A 700 (350 900 675) B 1300 (1650 1100 1325) 7) 6/17, 35%.

10) Lack of conditions (16% of the total).

11) (1) 15 60 3 = hours) takes 45 minutes and cannot (2) (15-15 (60+5) 5) 60+15 60+15 (60+5).

35 52 hours = 40 and 20 52 minutes < 42, can.

3: 8 pcs.

546 = 2 * 3 * 7 * 13, the length of the large rectangle can be 2 * 3 * 7 * 13 to 2 * 13 a total of 8 kinds.

1: A=

B = C = Full length = Specific: A = B + C... A-B = C =

B = (A + C) 5... A) 5... A = A - B = ... B =

1] A, B, and C combined.

6] A 700 B 1300

10] I can calculate the proportion, but I don't know the number, I don't know if it's a problem or if it's not deep enough.

11] The first one doesn't work, and it takes forty-five minutes to make a one-and-a-half-round trip, and the second one does, about forty minutes.

I'm too lazy to write about the process, so I'll write it to you if I use it.