Math homework to write process Math homework requires a process.

There are too many topics, do some by yourself first, you won't send them again, practice makes perfect, hard work will progress 2: cuboid 12 edges 4 long 4 wide 4 high.

72 4 = 18 18 divided by 3:2:1 Total number of parts 64, isosceles triangle The bright base angles are equal.

The ratio of the top angle to the base angle is 1:2

Top angle = 180*1 (1+2+2)=36

5. The ratio of the waist to the bottom is 5:2 and the ratio of the three sides is 5:5:

26. The ratio of subtraction to difference is 4:3, and the subtraction is 4+3=7 parts of the ratio of three numbers 7:4:

3 The minus is 4 7 + 4 + 3) 7, 3/4 of A and 5/6 of B are equal.

A: B = (5 6) (3 4) = 10:9

A-B = 8, the average of A, B, C is 80, and the sum of three is 240

240 amp 1:2:3.

9. A's 7 or even 5 is equal to 5/6 of B

A: B = 7:6

A-B = 45

10. Let B be x 9 8*x (x+34)=7 10x=56 A=56 8*9=63

11. The ratio of A and B is 4:3, such as A plus 14, then the quotient of A divided by B is 2/5, what is the number of A?

Think of A as a multiple of B Start A is 4 2 of B, and when 14 is added, it is 2 5 of B So B = 14 (4 3-2 5) = 15

A = 15 * 4 3 = 20

4=18, and then distribute 18 proportionally to find the length, width and height, respectively, the volume should be 162 cubic decimeters.

3. Exactly the same as the previous one. 16 cubic decimeters.

Distributed at a ratio of 1:2:2, the apex angle is 36 degrees.

Distributed in 5:5:2, the bottom edge is 6 cm.

2 is distributed 4:3, and the minus should be 92

7. B is A's: 3 4 5 6 = 9 10, 3 is proportionally distributed, A 40 B 80 C 120

9. Same as question 7. B is A's: 5 7 5 6 = 6 7 , 45 (1-6 7) = 315

11. The question is wrong.

1 What is the volume of a 432 cm long iron wire, cut off two-thirds, weld the rest into a cuboid, and make its length, width and height ratio 3:2:1?

432 (1-2 3) 4 36 proportional, yes, 18*12*6 1296 cubic centimeters.

2.Out of all the divisors of 48, find out which ratio of the two divisors is the smallest one?

3.Divide two numbers, the quotient is 60, the remainder is 1/12 of the above, the dividend is 545, what is the divisor?

You haven't said where you copied the 11 questions wrong.

There are too many topics, do some by yourself first, and then you won't send them again, practice makes perfect, and hard work will improve.

2: 12 edges of a cuboid.

4 long, 4 wide, 4 high.

18 According to 3:2:1, the total number of servings is 6

4. Isosceles triangle.

The bright bottom corners are equal.

The ratio of the angle of the apex angle to the base ridge ruler is 1:2

Top angle = 180*1 (1+2+2)=36

5. The ratio of waist to bottom is 5:2 three-sided.

6. The ratio of subtraction to difference is 4:3, and the subtraction is 4+3=7 parts.

The ratio of three numbers is 7:4:3

The minus is 4 7 + 4 + 3).

7. Three-fourths of A and five-fifths of sixths of B are equal.

A: B = (5 6) (3 4) = 10:9

A-B = 8, the average of A, B, C is 80, and the sum of three is 240

240 amp 1:2:3.

9. A's 7 or even 5 is equal to 5/6 of B

A: B = 7:6

A-B = 45

10. Let B be x

9/8*x/（x+34)=7/10

x=56A=56 8*9=63

11. The ratio of A and B is 4:3, such as A plus 14, then A divides by the quotient of Sakura and Gao B is 2/5, what is the number of A?

Think of A as a multiple of B.

Begin. A is 4 2 of B

After adding 14, it is 2 5 of B

So B = 14 (4 3-2 5) = 15 A = 15 * 4 3 = 20

First of all, if the two squares with the same side length in the lower left corner are x, then the square in the lower right corner is x+1, and the square in the upper left corner = x+1+1, then the square in the upper right corner is x+1+1+1, and because the square in the upper right corner = the sum of the two squares in the lower right corner - the small square in the middle = 2x-1, the equation can be obtained.

2x-1=x+1+1+1

Solution: x=4, then the area of the square in the lower right corner is 4+1=5, the square in the upper left corner is 4+1+1=6, and the square in the upper right corner is 4+1+1+1=7, then the area of this rectangle is 1+4+4+5+6+7=27

That's the result, hope.

As can be seen from the diagram, B is 1 cm larger than A, C is 1 cm larger than B, and D is 1 cm larger than C, so D is 3 cm larger than A

And because the sum of the side length of d and the length of 1 is exactly twice the length of the side of a, the side length of a is 2cm, and the length of the side of b:::is 5cm

Then the area of the rectangle is:

4+3）×（3+4）=49（cm²）

Dear landlord, the smallest square side length is A, and the other three sides are A+1, A+2, A+3, so the area is.

2x +(x+1) +x+2) +x+3) =5x +14+12x, because he didn't tell the side length how much, so he couldn't find the number, so he could only set.

X, thank you!

2: Set the master's efficiency to x

Apprentice for (1 12-x).

1/12-x)x5+1/12x15=1

The efficiency of the rental master is 1 3

Therefore, the master lost 3 days to complete the sale.

1 Let the length and width be 15x 7x respectively, then the length of the square is 15x-7x = 8x and the width is 7x after the square is truncated

7x+8x)×2=30

x=2 then 15x=30 7x=14

The length and width of the original rectangle were 30 cm and 14 cm, respectively.

2 Let the ten-digit number and the single-digit number be 2x 3x, then there is (3x 10+2x)-(2x 10+3x)=18x=2 2x=4 3x=6, and the original number is 46

Solution 1 Let the length and width be 15k 7k respectively, then the length of the square is 15k-7k = 8k and the width of 7k remains unchanged after the square is truncated.

7k+8k)×2=30 => k=2

Then 15k = 30 7k = 14

The length and width of the original rectangle were 30 cm and 14 cm, respectively.

2 Let the ten-digit number and the single-digit number be 2x 3x respectively, then there is (3x 10+2x)-(2x 10+3x)=18 to get x=2, that is, 2x=4 3x=6, and the original number is 46

1.It is set to be 15 parts long and 7 parts wide.

Then the new perimeter is: 7 * 2 + (15-7) * 2 = 30 copies, each copy is: 30 30 = 1 (cm).

Original length 1 * 15 = 15 (cm) width: 1 * 7 (cm) 2There are 2 copies for 10 places and 3 copies for each person.

3*10+2-(2*10+3)=9 servings.

Ten digits: 2*2=4 single digits: 2*3=6 original number: 4*10+6=46

x = 7 or x = 3

When the waist length is 3, the base is 7, which does not conform to the trilateral theorem of the triangle.

So the waist is 7 and the bottom is 3

Perimeter = 7 + 7 + 3 = 17