Elementary school quiz questions I won t be in a hurry

This year, the age difference between father and son is 39-9=30 years old, the age difference will never change, when the father is 3 times the age of Xiao Ming, the age difference between father and son is still 30, so the age of Xiao Ming is doubled, the father's age is 3 times, the difference between father and son is 2 times, this 2 times is 30 years old, so double is 15 years old, then Xiao Ming is 15 years old, so 15-9 = 6 years.

Composite formula: (39-9) (3-1)=15

The age difference between father and son is 39-9=30 years old, which will never change, when the father is 3 times the age of Xiao Ming, the difference between father and son is 2 times, and this 2 times is 30 years old, so double is Xiao Ming's age, that is, 15 years old, so after 15-9 = 6 years.

Comprehensive formula: (39-9) (3-1)-9=6

After X years, Dad is 3 times the age of Xiao Ming.

Xiao Ming: x 9

Dad: x 39

3 (x 9) x 39

3x＋27＝x＋39

2x＝12x＝6

So after 6 years, Dad is 3 times the age of Xiao Ming.

Let's assume that after X years, Dad will be 3 times the age of Xiao Ming.

Then after x years, Xiao Ming is 9 plus x years old (9+x), Dad is x plus 39 years old (39+x), Dad is 3 times Xiao Ming's age, that is, Xiao Ming's age multiplied by 3 is equal to Dad's age 3 (9+x) = (39+x), using the multiplication distribution law 27 + 3x = 39 + x

39-27=3x-x)=(12=3x)=6

Set in the year n, Dad is 3 times the age of Xiao Ming.

39+n --= 3 solution n =6

9+n I have an error in my computer's word2003 system and I can't formula. You can only use the dotted line to represent the score line, forgive me!

5: Shortcuts.

4: Drop-down menu, shortcut menu.

3: I don't understand this.

5: Shortcuts.

4: Drop-down menu, shortcut menu.

I don't understand, I'm sorry hehe.

It was as if the half of the tooth had been hollowed out when it was first handled. Is it meant to be like this?

No, the inside of the tooth is empty, but if we cut the tooth longitudinally and look at it, we can see that the tooth is composed of three layers of hard tissue: enamel (commonly known as enamel), dentin and cementum, and the innermost layer of pulp soft tissue. The hollow hole you're talking about is the pulp cavity.

Does it make a difference if you haven't dealt with it for so long? 2.At that time, the doctor said that when he grew up, he would wait for the teeth to be shaped before getting porcelain teeth, was it necessary to do this?

Dental trauma in children, failure to break the crown in time**, can cause pulp necrosis of the affected tooth, inflammation of the root tip of the tooth, so that the root of the tooth stops developing or root resorption, and even causes tooth loss. Fractured teeth can also cause changes in the adjacency relationship with adjacent teeth, and can also reduce the position occupied by the traumatic tooth, affecting the normal alignment of the dentition, and adding trouble to the later restoration. At the same time, the trauma and fracture of the anterior teeth have different degrees of impact on children's pronunciation and aesthetics, and some children will become reluctant to speak, have low self-esteem, timidity, and even be withdrawn.

Autologous recrowning and refitting with broken tooth fragments whenever possible is the best way to preserve the natural anatomy of a young permanent tooth.

I'm 15 years old now, so I think I can get it, right?

I suggest that you go to the hospital now to have a check-up first, and it is best to wait until you are 18 years old to do it after the first tooth**, and now you can do a temporary tooth first.

The front teeth have been replaced, and now they are filled.

That's right, that doctor must have treated your nerves, and generally professional doctors will recommend porcelain teeth after the age of 18, like private clinics will say to do it immediately in order to make money. But now you have to pay attention to the front teeth not to bite hard things, not to bite apples and the like, and wait for the jaw to develop and set.

What you did before was a root canal**, and you must repair the tooth after doing the root canal**, if you ignore it, it will affect oral hygiene and aggravate tooth decay, like you can't do porcelain teeth at your age, at least you need to wait until you are 20 years old to do it, and you can temporarily do a temporary crown to restore the function of chewing.

Radiographs to confirm the diagnosis 1 Yes It should be done for the root canal **, and there will be no impact in the future 2 It is necessary to wait for the 18-year-old to do porcelain crown restoration after the finalization 3 It is okay to do it now, but the gums will still change After the adult stereotype, it may still have to be replaced.

You can make porcelain teeth, and the temporary teeth are made of resin to make a crown belt, and the porcelain teeth will be removed when they are done.

First of all, what is removed from the tooth is called the dental nerve, which is the nerve that conducts pain. After the tooth is removed, it will not hurt no matter how you try it. Secondly, after the tooth nerve is removed, the nutrient supply of the tooth will be interrupted, so it is recommended to let the doctor try to protect the tooth nerve as much as possible.

Again, unless you are a child or someone who is not suitable for anesthesia, there is generally no pain after anesthesia, just feeling hot, so don't worry. As long as you open your mouth well, the doctor will help you do it soon! These ** look at the material, the German material is the best (planting and imitating materials), followed by the United States, and finally South Korea (common in China).

**It also ranges from 30,000 to several thousand yuan, it is recommended to go to a regular clinic to do it!

a*b*ab=bbb

So a*ab=bbb=111

111 = 3 * 37 can not be decomposed in other ways.

So a*ab=3*37

So a=3, b=7

I made it too, but a little slower than him! Huh,

This condition may be caused by dental neuritis, it is best to complete the examination, and then ** after the diagnosis, pay attention to oral hygiene and follow-up, I wish you good health.

It means that your tooth has decayed and you need to see a doctor.

Your problem can be solved by doing residual grinding correction can solve the general orthodontic cost of about 7000, and the yellow teeth can be sandblasted and cleaned first, the cost of 100 to 300 is this, mainly for tooth stains, deeper cleaning of pigmentation on the tooth surface, such as frequent smoking, drinking tea, drinking coffee, etc., it can also make the tooth surface smoother, the tooth surface is smoother, the tooth surface is smoother, the self-cleaning of the teeth will be better, and it is less prone to calculus. If you still feel that your teeth are yellow after cleaning, you can do cold light whitening, and the cost of cold light whitening is about 1000-2000.

Hello, 20-year-old teeth are not aligned, can be corrected, wear braces for 1 to 2 years, smoke stains that smoke a lot, can be completely removed by scaling, wash and guess more than 100 to 200 slippery teeth, correct about 10,000 full mouths in Beijing, straighten the teeth at the beginning of a little feeling, and then the suitable ear section of the wax should be good to burn slag. After the correction, you can return to the doctor on time and listen to the doctor's guidance.

If you want to clean your teeth, Qinhuangdao is 80-150 once. I also smoke to tell you a way not to spend money to wash, brush with a toothbrush before brushing your teeth with a toothbrush before baking soda first, three or four days, stupid Heng Shi Yahuang is guaranteed to eliminate.

At 20 years old, I don't know if it's too old. It is estimated that the row with sleeve is about 300-400. It's not a city**, and it's certainly not a strip of limbs.