Or is it a math problem, how many are exactly? Probably a bit wrong! 100

A barrel of oil weighs 3 5 kg 6 kg", and (the total weight of the oil) is considered as the unit "1", (1) = (3 5).

Boys make up 1 4 of the class, and (class size) is considered as the unit "1", (1) = (1 4).

3 7 of the number of ducks is equal to the number of chickens" Think of (number of chickens) as the unit "1", (1) = (3 7).

The number A accounts for 2 5 ", and (number B) is regarded as the unit "1", (1) = (2 5).

Second, I will fill in.

1. The 1 4 of a number is 10, and to find this number, the column equation is (10 1 4).

a、 ÷b、 ÷c、 ×d、 －

The 5 of 7 is ( 25 ); A number of 2 3 is 24 , and this number is (36 );

1 of 4 (24 times) is 6

2 7 of a kilogram is (20 7) kilograms, and 3 4 of (40 3) kilograms is 10 kilograms.

Kilograms increasing it by 1 3 is (40 3) kilograms, (215 14) kilograms increasing it by 1 43 is 15 kilograms.

1 4 kilograms of gasoline were used, and (6) kilograms remained.

25 2 ) kg of gasoline used up 1 5 and 10 kg remained.

3 kilograms of gasoline were used, leaving (5) kilograms.

Good luck with your studies!

A barrel of oil 3 5 weighs 6 kilograms", (the weight of the barrel of oil) is regarded as the unit "1", (the weight of the barrel of oil) 3 5 = (6).

Boys account for 1 4 of the class, and (class size) is regarded as unit "1", (class size) 1 4 = (number of boys).

3 7 of the number of ducks is equal to the number of chickens" Think of (the number of ducks) as the unit "1", (the number of ducks) 3 7 = (the number of chickens).

The number A accounts for 2 5 ", and (number B) is regarded as the unit "1", and (number B) 2 5 = (number A).

Second, I will fill in.

1. The 1 4 of a number is 10, and to find this number, the column equation is (10 1 4).

a、 ÷b、 ÷c、 ×d、 －

The 5 of 7 is ( 49 ); A number of 2 3 is 24 , and this number is (36 );

24 )1 of 4 is 6

Kilograms of 2 7 are (35) kilograms, (40 of 3) kilograms of 3 4 are 10 kilograms.

Kilograms increase it by 1 3 is (40 3) kilograms, (645 44) kilograms increase it by 1 43 is 15 kilograms.

1 4 kilograms of gasoline were used, and (6) kilograms remained.

Kilograms of gasoline used up 1 5 and 10 kilograms remained.

3 kilograms of gasoline were used, leaving (5) kilograms.

1. Tung oil 3 5 6

2.Class size 1 1 4

3.Duck is always 1 dizzy and a bit confused. II

A barrel of oil 3 5 6

Boys 1 4 class size.

Duck 3 7 chickens.

B 2 5 A number. a

Kilogram 500 250 2 15 2 30 30 25 So 500m per milliliter ** is relatively low.

In the triangle OAP, if OA is regarded as the bottom, then the ordinate y of P is high, so the area of OAP is: S=4Y 2; And because y=-x+6, s=4(-x+6) 2=-2x+12 is the functional relationship between s and x.

Put two units of medicine assuming to start,Start f(x)=2,Inexplicably it's the sixth day.,Don't worry about anything else messy.,Because it's been decreasing, the tenth day can be higher than 4 on OK.,So the first 2 units of medicine were left at that time 5-40 tenths.,Damn what to break?,It's equal to 4 and 39/40,There's definitely a problem here.,I don't know if you're wrong with the symbol.,It's been higher than 4.,Since it's wrong, let's start again- - If you don't have to worry about anything else, you can understand it yourself, first sort out your thoughts (put it in two parts, and add it to one, two or two times, because the agent has been getting lighter, so as long as you ensure that the concentration on the tenth day is higher than four, the concentration of the first four days will definitely be higher than four, at this time, the first time you put it is a fixed value, and the sum of this value and the value of the second dilution four days is greater than or equal to 4) Key !! It's pretty simple, if something goes wrong, just know what he wants you to do.

The answer is obviously wrong, 4=2f(10)+af(4), don't blindly believe the answer.

You don't know what x really means.

The meaning of x is calculated from the beginning of the delivery, and then how many days have passed to a certain day, for example, 1 on the first day, 2 on the second day, and 3 on the 5th day, so what is the concentration on the 7th day?

Day 7: Look at the first day, y1 = 1 * f (7-1) = f (6) the second day cast, y2 = 2 * f (7-2) = 2f (5) on the 5th day, y3 = 3 * f (7-5) = 3 f (2) all add together is the concentration of the seventh day. Got it?

It can only be multiplied by 7, and the single digit is 1, so the box below is 7 and then the box in the middle of the top should be 4, because only the single digit of the result of multiplying 4 by 7 will be 8, and the first box is 9

With the product of 4 or 6 and 9, the single digit is 4, if the rightmost box above is 9, then the middle box has no solution, because 6 times 9 = 54, into 5, and the result is 0, so the middle box and 6 multiplied by the single digit is 5, so the rightmost box should be filled in 4, then the middle box can be 3 or 8

234 6 = 1404 or 284 6 = 1704

A: Because the 3 groups have the same number of people, so.

The sum is definitely a multiple of 3, while.

Not a multiple of 3.

So Xiaoqiang must have miscalculated.

Thus I agree with Xiaohong's statement.

Your answer should be pretty much complete, but you just don't get to the point.

That is, the total number of people in the three groups should be a multiple of 3, and 64 is not a multiple of 3, so Xiaoqiang miscalculated.

6. Substituting the two-point formula, (y+1) (2+1)=(x+3) (0+3), simplifying y=x+2

7. The simultaneous two-line equation is solved to obtain x=2,y=3, that is, the intersection of two straight lines at (2,3).

8. The simultaneous two-line equation is solved to obtain x=-3, y=-7, that is, the intersection of two straight lines at (-3, -7).

<> please change the front of the first day.

Derivative of composite functions. The town of Bi Socks Hui in the state.

<> slag collection sedan car is like a silver cloud.