Who knows the answer to math problems, and college students can t do the wrong questions

In fact, this problem is very simple, we don't want to count the boss's money, the wrong person often starts from the boss, we look at how much the guest earns, he took out a fake 100, took away 79 real money and a gift worth 21 yuan, adding up to 100, if the gift only costs 18 yuan, then the boss loses 97, and the gift is 100 if it is 21

Hehe. $97.

Exchanging money with a neighbor doesn't count, because there is no transaction in the process.

In addition, what happened with the young man was equivalent to the young man looking for the boss to exchange change, but the boss planned to earn 3 yuan in the process, that is, if the boss earned 3 yuan, then it was an equivalent exchange. Without waiting for the exchange to be successful, the boss gave 18+79 yuan directly to the young man, and he didn't get anything. So the boss lost 97 yuan.

If the $100 is true.

The boss will earn $3.

Because the fake 100 yuan in the end is in the hands of Lao Ban.

Loss of 100 yuan.

It is equal to the loss of 97 yuan for old spots.

Boss Wang's loss in this transaction = the money defrauded by the young man - 3 yuan = gift price + 79 yuan - 3 yuan = 97 yuan.

The boss loses. 100 (21 18) 97 (yuan) young man "earned".

79 18 97 (yuan).

Well, that's right.

That's right. But the boss still has a loss.

Didn't remember his physiognomy, **, address.

This is the most loss-making.

That's an afterword, hehe.

The answer should be 118.

Reason: First 100 yuan, the cost price of the gift is 18 yuan, and the boss loses 118 yuan

That's right, right?

197 ah, 79 yuan for the young + 18 yuan for the gift + 100 yuan for the bad neighbor = 197 yuan.

It should be 179 + goods with a cost of 18 yuan, totaling 197 yuan.

179 to repay the neighbor's money + find money (fake money counts as 0 yuan.)

The young man earned 97, the neighbor did not.

The boss loses 97....

If you consider the profit of 3 yuan that he should make, he loses 100

<> college mathematics test has true/false questions, usually a total of 22 questions, including 12 multiple-choice questions, 4 fill-in-the-blank questions, 5 answer questions, and 1 optional question. Mathematics is the study of concepts such as quantity, structure, change, space, and information. Mathematics is a general means for human beings to strictly describe and deduce the abstract structure and pattern of things, and it can be believed that all mathematical objects are inherently artificially defined.

In this sense, mathematics belongs to the formal sciences, not the natural sciences. Different mathematicians and philosophers have a range of opinions on the exact scope and definition of mathematics.

Summary. 1 kg - 999 grams = 1 gram.

Hello dear. What is your math problem? Take a screenshot and let me see if it's okay dear.

Circle that question, question 10.

1 kg - 999 grams = 1 gram.

Because there is a classic counterexample, define such a function as follows, and add the definition at x=0.

f(x)=x²sin(1/x) x≠0

f(x)=0 x=0

It is easy to know that the derivative of the function at x=0 is 0, but f'(0) but does not exist.

The problem of logical confusion.

First of all, the actual amount of potato money spent per person is 9 yuan (because later the joke was 1 yuan.) If you directly calculate the total amount of money spent by 3 people, it is 27 yuan, plus the 2 yuan hidden by the waiter, and then it is equal to 29 It is definitely not right. Because the 27 yuan already includes the 2 yuan.

So there's no need to touch hand sanitizer at all.

So just add the 3 yuan that the boss refunded them (because they were hidden by the waiter for 2 yuan, and this 2 yuan I have just explained is already in 27 yuan). I got 30 yuan.

The problem is solved.

It's already once. It's simple.

Analysis: The mistake is in the step "[f(1)-f(0)] 1 -2", because it is known that f(x) 4x -5x +x-2 can be found that f(1) and f(0) are both equal to -2, so the step "[f(1)-f(0)] 1 -2" should be changed to "[f(1)-f(0)] 1 0", so the equation for should be 12 -10 +1 0, and the solution is 5 13) 12, and it is easy to judge that both values are within (0,1).

If you did this question from the beginning, you can do it again.

5. When x=0 is continuous, then there is.

lim(x->0)sin2x x=x+a=a and lim(x->0)sin2x x=lim(x->0)2x x=2 so a=26, when x=4 is continuous, then again.

lim(x->4)(x²-16)/(x-4)=lim(x->4)(x+4)=4+4=8

a=87, when x=0, 2x+3=n

i.e. 0+3=n, n=3

and lim(x->0)sinmx 2x=lim(x->0)mx 2x=m 2

m/2=3,m=6

This type of question catches the point of continuity. The limit of other functions at this point is equal to this value in order to be continuous.

Just find the left and right limits as required.

Calculate the volume in cubic centimeters.

Cubic centimetre. So it suffered.

Calculate the volume. Let the volume be vThe height is h

Xiao Liang is at a loss.

Eun ,,, suffered.

10 cm:

r=10/2=5

s=5*5π=25π

4 cm and 6 cm.

r=4/2=2

s=2*2π=4π

r=6/2=3

s=3*3π=9π

s total = 13

V=sh thickness h is the same.

So Xiaoliang suffered.

The main thing is to look at the volume, and because the thickness of the sandwich cake is the same, it is only necessary to compare the i area.

pi*2 2 +pi*3 2=pi*13 So, Xiaoliang suffered.

If you would find the area of a circle:

Because the sandwich cake is the same height, it doesn't matter, multiply the square of (10 2) to get the square centimeter (this is the area of the biscuit with a diameter of 10 cm), and then multiply the square of 6 2 and the square of 4 2 respectively to get the square centimeter. (This is the area of the two biscuits given by the salesperson).

Of course it is greater, so Xiaoliang suffered.

If you want to do the math, please ask.

Suffered. Just by area.

So, will eat less.

As already said in the question, if the total price is equal, there is no problem of loss. Don't worry about its quality, thickness, etc.

At a loss, the surface with a diameter of 10 is 25, and the surface with a diameter of six and four is 4 and 9 respectively, so the sandwich should be less.