The little monkey ate four more peaches than the rest. The little monkey ate one more peach and ate three times the rest. How many peaches does the little monkey have? The little monkey ate four more peaches than the rest. The little monkey ate one more peach and ate three times the rest. How many peaches does the little monkey have? Suppose you eat x peaches for the first time X+X-4=4(X+1)/3 X=8 8 + 8-4 = 12 I want to know that x + x-4 = 4 (x + 1) / 3 What's going on in the text?

The little monkey ate four more peaches than the rest. The little monkey ate one more peach and ate three times the rest. How many peaches does the little monkey have? The little monkey ate four more peaches than the rest. The little monkey ate one more peach and ate three times the rest. How many peaches does the little monkey have? Suppose you eat x peaches for the first time X+X-4=4(X+1)/3 X=8 8 + 8-4 = 12 I want to know that x + x-4 = 4 (x + 1) / 3 What's going on in the text?

On both sides of the equation are the total number of peaches. Let's eat x peaches for the first time. On the left side: after the first time, we eat 4 more peaches than the rest, that is, x-4. The total number is x + (x-4). We can omit the brackets, that is, x + x-4. On the right side: after the second time, we eat x + 1 in total, at this time, we eat 3 times of the rest, and the rest is x + 1 / 3

The little monkey ate four more peaches than the rest. The little monkey ate one peach, which was three times as much as the rest. How many peaches does the little monkey have
We need formulas, not equations

(4+1+1)÷(3-1)*(3+1)=12
First ask for another one, and then eat 6 more than the rest
Then find a multiple of 1. (the one who ate is 3 times, the rest is 1 times) 6 is 2 times
Finally, find 4 times

The little monkey ate four more peaches than the rest. The little monkey ate another one. At this time, it ate four times as many peaches as the rest. How many peaches did the little monkey have

Let X be eaten at the beginning, then the total number is 2X-4
After eating another one
X + 1 was eaten, and the total number of left - eaten = 2x - 4 - X - 1 = x - 5
4 (X-5) = x + 1
4x-20=x+1
3x=21
X = 7
So, a total of 2X-4 = 10

Conversion of chemical energy into electrical energy
Who can be more specific

Dry cell and storage battery rely on chemical reaction to make the positive electrode gather positive charge and the negative electrode gather negative charge, so as to convert chemical energy into electric energy

How to solve 80% x-40% x = 3
Yes! x: By the way, find people in Tancheng, Shandong to be friends

80%x-40%x=3
0.4x=3
x=3/0.4
x=7.5

As the title, let a toy windmill face the top of the light bulb, and see how the windmill turns. In this process, how does the energy transform
Let a toy windmill face the top of the light bulb and see the windmill turn____ Can be converted into____ Can, and then into____ Yes

Electric energy, thermal energy and kinetic energy
First of all, the bulb heats up because it uses electricity. At the same time, it heats up the air around the bulb. The rising of hot air promotes the flow of air. The flow of air drives the rotation of the windmill blades. This process turns heat into kinetic energy for the computer

How do astronauts live in space?

1、 (live: sleep hanging, can take a bath)
Although the space in the spaceship is less than 6 cubic meters, it can still solve the problem of astronauts' bathing because there is a unique bag for bathing in the spaceship, which can also be used for bathing
Because of weightlessness, the astronauts sleep in the spaceship is different from that on earth. There is gravity on the ground, but there is no gravity in space. As soon as the astronauts lie down, they float up. For this reason, a sleeping bag is prepared in the spaceship and hung on the wall. When they sleep, they should go into the sleeping bag and hang there
2、 (eat: compressed brick, toothpaste tube)
The menu of astronauts is also very rich, with 20 choices, which is not as hard to swallow as you think. However, space food is not ordinary fruits and vegetables, but specially processed "compressed brick" or "toothpaste tube". After adding a certain proportion of water, it can recover its original shape and taste good. It contains all the nutrients needed by the human body, Food can't be kept on the plate as honestly as it is on the ground. Instead, it floats on the table. So experts design space food as toothpaste, squeezing it into the mouth like toothpaste
These foods are rich in vegetables, protein and fat. It is said that aerospace group has a special organization to study space food. Breakfast, lunch and dinner, what to eat three times a day and how to match them are all designed scientifically
3、 (clothing: 10kg, worth tens of millions)
Among them, the most complex structure is composed of 14 layers: the innermost layer is the lining of the liquid cooling ventilation suit; the outer layer is the liquid cooling ventilation suit, which is made of nylon elastic fiber and many plastic tubes for conveying cooling liquid; the outer layer is the pressurized air layer, and then the limiting layer, It is used to limit the expansion of pressurized gas dense layer; outside the restricted layer is thermal and micro meteorite dust protective clothing, which is composed of 8 layers, playing the role of thermal and micro meteorite dust protection; the outermost layer is the jacket. Although the structure of the spacesuit is complex, it is not difficult to wear, and it can be worn out in about 15 minutes. It is usually composed of ventilation layer, air tight layer, thermal insulation layer, etc., which is a small sealing system, This kind of spacesuit belongs to the in cabin spacesuit. In addition to the helmet and rubber gloves, the whole spacesuit is made of a special high-strength polyester. The whole suit weighs 10kg and is worth tens of millions of yuan. In addition to the design cost, the total cost is billion yuan

How much is five pounds?
Is it Jin or kg

One pound is about 0.9 Jin, so five pounds is about 4.5 Jin

2(2a^2-6a)-4(3a+5-3a^2)=

2(2a^2-6a)-4(3a+5-3a^2)
Remove brackets directly
Just merge the same items

Given the electric power and voltage, how to calculate the resistance

P=U^2*R
So r = P / u ^ 2