Math problems, the brain is not good, the more I calculate, the more confused I become, asking for h

Obviously, 5674 plus 3000 is not right, you spent 5674 only, what are you doing with 3000, the second kind is not right, you spent a total of 6402, 3201 yuan per person, and first gave you 3000, and then 728 was also from him, that is, he paid a total of 3728, you should give him 3728-3201

The total cost is 5674 + 728 = 6402, and 3201 per person is equally divided

He has already taken out the cost of 3000 + 728 = 3728, so he paid 3728-3201 = 527 more, this part has to be paid by you.

You buy 5674 once, of which 3000 is his, that is, you only spend 5674-3000 = 2674 、、、plus 527 is exactly 3201 per person).

There is no doubt that the first is right, and the second is very unreasonable... He gave you 3000, how can it not be counted...

Also, the 3000 is not in the 5674 yuan, right?

If you divide it evenly, you don't need to add the 3000 given by your friend to calculate the total cost;

So he's still 201 bucks short of you.

He used 3000 + 728 = 3728

You used 5674-3000=2674

He used 3728-2674=1054 more

You'll have to give him $527.

Your second algorithm is correct, haha!

The unit price of this roll of cotton is 8,000 a ton, that is, 8,000 yuan tons.

1 ton = 1000 kg = 1000000 grams.

Conversion: 8000 yuan ton = 8000 10000001 125 = yuan gram.

This roll of cotton is 150 grams per meter, so the amount of money per meter is:

150 yuan, that is, ** is the yuan meter.

According to the solution, each meter weighs 150 50 = 3 grams.

**8000 1000 3 yuan per meter.

Answer: ** per meter is yuan.

8,000 yuan a ton, that is, 8,000 1,000 = 8 yuan a kilogram, that is, 8 yuan can buy 1,000 grams of such cotton.

A roll of cotton 150 grams, 1000 grams of such cotton has 1000 150 = rolls.

Therefore, 8 yuan can buy such cotton, which is rice.

Therefore, the ** per meter is 8 335 yuan.

A roll of cotton is 50 meters and weighs 150 gramsthen weighs 3 grams per meter

Width of the cotton ** is 8000 a ton:1 ton is equal to 1,000,000 grams

Find how much is the cotton per meter**:Therefore, cotton per meter ** is 8000 divided by 1000000 equals

Get every gram, one meter and three grams: 3 times by

160 a meter, 8000 divided by 50, the other two are interference conditions, useless people, only ask one meter of **.

I love you more than any of my predecessors, you are like another in this world, if I say that without you, I guess I am still borrowing wine to kill my sorrows, drifting alone among the lonely cities of high-rise buildings and buildings, except for not letting you go, I have no requirements for you, and I am constantly communicating with you in every place I can think of, how to describe your place in my heart.

（3x+

15x²+30x²+168x-111=0

Using the formula method x=(-b root number b -4ac) 2a solution to x1=root number 14904 60

x2 = root number 14904 60

I'm a teacher, thank you for adopting.

Simplification obtains (x+, x squared+, using the universal root formula, x=[-b+ - root number(b squared-4ac] 2a, there is a problem to get b=, c=, a=1, find x=[root number.

The brain reacts slowly, and learning mathematics has one advantage, that is, it is not easy to forget what has been learned.

Brain Response Slow Learning Math Method:

First, listen attentively in class, and the important thing is to take study notes and read them in your spare time.

Second, memorize the formulas, know the formulas of junior high school mathematics are more numerous, and some of the problems in the future are solved by a set of formulas.

Third, from the beginning of junior high school mathematics practice questions and exercises, what you can do and what you can't do, do one by one.

Fourth, if you don't know how to ask the teacher, you can also come and ask me.

If you want to do well in math, you need to sleep less.

You don't have to fill in the money, you don't need to look at the intermediate process, just look at the results, you get 15 yuan from the customer, and 80 yuan from the customer's second-hand, this is not wrong, you receive a total of 95, and then hand it over to the boss. There's nothing wrong with that.

Think of it this way, first you have a 5 piece of change that you have in your hand, and then you go to collect it. In the first step, the customer gives you 20, and you return 5, at this time you have 20 in your hand, but five of them are your own, that is to say, at this time you have 15 in your hand and 5 yuan yourself; The second step, the customer gives 100, and you return 20, at this time you have 100 yuan, but when you return the customer to 20, you also put 5 yuan of yourself in 20, so these 100 yuan have 95 yuan for the company and 5 yuan for you. And then you give the company 95.

Exactly.

Customer 1: You find the customer 5 yuan (your own), and then go to the second customer with 20 yuan.

Customer 2: You give 20 yuan (the first customer) to the second customer, and then return to the company with 100 yuan.

Company: You give 100 yuan (the second customer) to the boss, and the boss gives you 5 yuan.

So, no money was filled.