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When is the topic of elementary school? Classic question type!
Ahem, let's get down to business. As can be seen from the question, 1 rabbit + 1 sheep = 60 kg, 1 rabbit + 1 pig = 45 kg. There is 1 rabbit in both formulas, and the sheep in the first formula is 60-45 = 15 kg lighter when replaced by a pig, which means that a pig is 15 kg lighter than a sheep.
Looking at the last formula, 1 sheep + 1 pig = 95 kg. Earlier we know that pigs are 15 kg lighter than sheep, so we can think about it, if two pigs imagine 1 pig + 1 sheep as heavy, then we need to add another 15 kg, that is: 1 sheep + 1 pig = 2 pigs + 15 = 95 kg (or = 2 sheep - 15 = 95 kg, this step is very important, it is much easier to figure it out).
The weight of the pig and sheep can then be calculated. Taking the formula of 2 pigs + 15 = 95 kg as an example, we can find the weight of the pig through this equation: (95-15) 2=40 kg.
Then substituting pig = 40 kg into the second equation, you can find the rabbit, that is: 45-40 = 5 kg. When you know the weight of the rabbit, you can substitute the number into the first formula to subtract the weight of the sheep:
60-5 = 55 kg, you can also use our previous conclusion that sheep are 15 kg heavier than pigs to find the weight of sheep: 40 + 15 = 55 kg.
Answer: Sheep = (55) kg Rabbit = (5) kg Pig = (40) kg.
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You see, there are two pigs, two rabbits, and two horses. They totaled 45 + 60 + 95 kg. Then it can be calculated that it is a total of 200kg.
Divide by two, and that's the weight of a horse, a pig, and a rabbit. Example pigs. With 100-60
And so on.
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Sheep + Rabbit = 60
Rabbit + Pig = 45
Sheep + Pig = 95
Sheep = 60 - rabbit.
Pig = 45 - Rabbit.
Sheep + pig = 60 - rabbit + 45 - rabbit = 95
105-2 rabbit = 95
Rabbit = 5, so sheep = 55
Rabbit = 5 Pig = 40
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55 Aries, 5 Rabbits, 40 Pigs Do you want to answer the steps, I use a binary equation.
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It's embarrassing, I think I've been participating in math competitions from elementary school to high school, and I've never encountered this kind of problem. If it's a specific topic, I can help you do the math.
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Geometry problems are actually very simple, the main thing is that you usually have to practice more and need to think. As for the question of functions, you should try to get the first question right in the exam. If you want to get a high score, it all lies in the accumulation of questions you usually do.
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Now it's too late to listen to the lectures, you should understand the example questions in those books, and when you take the exam, you will have some basic questions, well, that's it.
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You don't understand what some of the book definitions mean.
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If you want to read English, pay attention to reading, even if you can, read it out of your mouth.
Read more books for languages.
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I've just done it for someone else, and I, as you wish (absolutely right) will definitely send it, and it will definitely !! The excavation brigade is sentenced to land.
If you don't believe me, it doesn't matter, anyway, I've been thinking about what I want, I'll give it to you right away!
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1. There is no inevitable connection between intelligence and grades, and many people with better grades than you definitely don't have a higher IQ than you. Good academic performance is not simply determined by IQ, it has many factors, the level of effort is one thing, and the more important thing is the method! With the method of doing more with less, there is no need to stay up late every day, and there is no need to engage in tactics.
2. Tell your family not to put pressure on you with high expectations, or you will be overwhelmed. Of course, I know that every parent hopes that their child can be admitted to Peking University and Tsinghua University, but not all children have that ability. Even if there is that potential, it is not well tapped and eventually buried.
3. Parents nag them, don't be affected, follow your plan and your goals. In this era, we rely on ability and strength to eat, not on any high education and high diploma, and those who only explain that the degree of nerdness is heavier.
4. Tell me about ways to improve your grades based on my experience. (1) First of all, it is necessary to have a clear plan, which is the kind of plan that is clear in the mind, and does not necessarily have to be written on paper. For example, what content I have to review today, what I don't understand, how many words I have to memorize, and how many sets of mock papers I have to make.
2) Be good at summarizing, I don't think there are as many questions as some people do before the high school entrance examination, but I mark the wrong questions and key classic questions in the papers I have done, and ponder and study them repeatedly. Eventually, you will know which type it is at a glance. (3) Be good at figuring out the thinking of the questioner, which may be a little difficult, but it is not impossible.
The point is always the point, and there is no harm in reviewing it a few times (4) Reasonable expectations for yourself, don't be too high, don't hope for anything extraordinary, that kind of situation is extremely rare. There is no need to worry about playing out of order.
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If you want to work hard and are willing to work hard, it's never too late!
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Yes Don't be playful and work hard.
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It's man-made, and I believe that I can do it.
1. Transform into the idea of completing the task and doing the problem, use the energy for independent research, you can look at the example problems, and when you encounter something you don't understand, you can dig out the root of the problem. Not once, not on both sides, not three times. >>>More
I'm honored that I'm an 8th grader.
Come on! Let's be more detailed!
Generally refers to the language, the practice of writing.
A well-known story: the daughter of the sea.
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