Kneel and beg for a high finger, and I ll give 50 points!

I recommend a few converters to you (Lightning**Conversion King Green Cracked Edition**) is simple and easy to use, fast, fill in the registration number and password at will, click to continue the trial, and use it directly without prompting registration. This is simple and easy to use, fool-type, I usually use this, the key is speed, quality can also be used).

Or (Tanuki Nest All-in-One Converter) can also have many functions, but there is an error.

Format factory) has fewer formats and is more powerful, but it is relatively slow.

There's also the (Shadow Factory) function, I tried it, you can customize the settings in an all-round way, the speed is not good, it didn't take long, so I haven't felt anything bad for the time being!

These are all free...

After installing the converter, open the interface - there is an add**file on it - open the add**file to find the **file you want to convert and add it to it-then it prompts you what format you want to convert - after selecting it, click to convert.

You try it and hope it will help you out.

90 degrees.

Because it is folded in half, it is bef hef, so hef = bef

and the PE score angle CEH, so CEP= PEH

Ninety degrees because it is a fold, so the angle hef = angle bef

And because the PE score angle CEH, the angle PEH = the sum of the four corners of the angle PEC is 180°

So the angle pef = 90°

Mine is the phone can't see the picture, alas, I want to help, I can't help, I can't do anything about it, it's good to be able to see the picture! The point is, I can't get on a computer right now.

1) 1 10 is 10%.

2) 1 9 i.e. 11%;

3) 1 8 i.e.

Assuming 100 points of stamps x sheets, then 80 points are 20-x sheets, from the question to get 1 * x +, get x = 15

There are 15 stamps with 100 cents and 5 stamps with 80 cents.

Pencil6 * 5 (pen) = 8

Typing is very hard, I hope the landlord will make progress in his studies, and if you need it, you can ask again!

1.If you want to draw this process, you have to draw it. There is no scanner.

2.I bought x stamps of 100 cents and 80 cents (20-x) stamps.

100 points = 1 yuan 80 points = yuan.

x+x=1520-x=4

A: I bought 15 stamps with 100 cents and 4 stamps with 80 cents.

Brother, you didn't even say the first question** rules, the ghost knows how to smoke.

1.The cube with an edge length of is the volume v=. The volume of the boxy steel forged with a cross-section is unchanged, so v=v1 (the volume of the boxy steel after forging), because v=sh(s:

Base area, h: height), so you want the length of the box is: v1

2.The side length of the box section is 2 decimeters = meters. So cross-sectional area =, v1=. Because you want 10 roots, the total volume v=10*v1=.

3.Carton volume = (20-4) * (12-4) * 2 = 256 square centimeters.

Let the side edge length x, then the bottom edge length is 2x, and the diagonal length = [(2x) +x +(2x) ]=6 9x =6, 9x =36

x = 4, total area = 2 (2x) + 4 (x * 2x) = 16x = 64dm volume = x * (2x) * (2x) = 4 * x * x = 4 * 4 * 2 = 32dm