Please help me with someone who really cares 5

I know one of the coolest and most attractive magic tricks for girls, and no woman can resist!

However, props are not usually available.

I'm here to tell you what you need to prepare. If you think you can collect it. That. I congratulate you.

What you need to prepare: chemicals made from gunpowder wool. First of all, gunpowder cotton is chemically called nitrocellulose, which is used to use ordinary absorbent cotton to put concentrated sulfuric acid and concentrated nitric acid prepared in a certain proportion of nitrification reaction, and after the reaction, nitrocellulose is generated, that is, it becomes gunpowder cotton, and then the gunpowder cotton is dissolved in a mixture of ether and ethanol to become collodion glue.

Here you need to find the flelo. After finding it. Tell me.

You've made it. Although you only have 5 points for this question. But I'll make you feel like it's worth it for 200 points.

Nothing is more important than getting the heart of your beloved. Believe me. Go collect it.

To add. This magic trick is very suitable for performing in public, and the more people there are, the better the effect. Perfect for you to show on school anniversary

Be low-key! Be kind! Say whatever you want! Keep it simpler and you'll be happier!

I guess you're supposed to be a girl, right? If it's a boy, you won't bother about such a trivial matter. Let's break it down for you.

1。Sometimes, it's not that you're not doing things well enough, it's that you don't take it seriously enough, and if you put your heart and soul into it, you won't care if the results are high or low. Try to do one thing with all your heart!

2。There is only one reason why you are often mispronounced, and you are not paying attention enough. Try to read a word intently, and I don't believe I'll get it wrong again!

3,。This is the main reason for you - you are absent-minded, and doing anything you agree on will not be satisfactory and will not be successful. Only those who focus will get high returns.

4。It's because you're not attentive enough that you will make mistakes in everything you do, then things won't succeed, and it's easy to get frustrated after you don't succeed, and if you have frustration, you will continue to do wrong things in a cycle.

5。Not everything will be satisfactory, as long as you try to do it with your heart, even if you don't succeed, you will get experience and feel fulfilled. Come on, I know you'll do even better in the future!

In fact, it is a great thing that you have dared to face your own shortcomings, try to do one thing seriously, you will find that it will not be so difficult to do a certain thing successfully, believe in yourself!!

is an isosceles triangle Suppose the waist ab=ac=2x bc=y list the perimeter equation according to the title 4x+y=21 (*

Since the side length difference of BC is 9, it can be divided into two cases: 2 BC+CD-AB-AD=9

The corresponding two equations are listed 1 3x-x-y=9

After solving the system of equations by combining the equations of 1 2 and the early range of the square equilibrium together, the first set of solutions is solved x=5 y=1; The second set of blocks or solutions x=2,y=13

According to the nature and characteristics of the triangle, the sum of the two sides is greater than the third side, and the difference between the two sides is less than the third side.

So the side lengths of the triangle are 10 10 1