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It is known that the area of rectangle A and square B is equal, if the length of rectangle A is 4.5x10 to the third millimeter and the width is 32x10 to the second millimeter How many square millimeters is the area of square B
The area of rectangle A is 4.5x10 to the third power and x32x10 to the second power, which is 1.44x10 to the seventh square millimeter. The area of rectangle A and square B is equal, so square B is equal to 1.44x10 to the seventh square millimeter
The cuboid with a length of 60 cm is cut into a cuboid with a length of 20 cm. The total surface area of the cuboid is increased by 10 square centimeters. The volume of the original cuboid is 1
A total of = 60 ÷ 20 = 3 segments. 4 additional areas
Bottom area = 10 △ 4 = 2.5 square centimeter
Volume = 60 × 2.5 = 150 CC
If you increase the height of a cuboid by 3cm, it becomes a cube, and the surface area increases by 60cm2. What is the surface area of the original cuboid? What is the original volume
The original cuboid surface area is (90 square centimeter) the original volume is (50 cubic centimeter) the bottom circumference is: 60 △ 3 = 20 cm, the bottom side length is: 20 △ 4 = 5 cm, the height is: 5-3 = 2 cm, the original surface area is: (5
Cut a cuboid 50 cm in length into two parts, and increase its surface area by 80 square centimeters. How many cubic centimeters is its original volume?
80 △ 2 = area of 40 square centimeter cross section
40 × 50 = 2000 cubic centimeter volume
Given that the image with inverse scale function y = K / X passes through (- 2, - 6), and the image with inverse scale function y = K / X is in the second and fourth quadrant, the value of K is calculated
How can (- 2, - 6) be in the third quadrant
It is known that the abscissa of the intersection of the image of the inverse scale function and the angular bisector of the fourth quadrant is 2, and the analytical expression of this function is obtained
The abscissa and ordinate of the point on the angular bisector of the fourth quadrant are opposite
X = 2, so this point is (2, - 2)
y=k/x
Then k = xy = - 4
So y = - 4 / X
Please give three examples that can be regarded as inverse proportion function relationship in life|
Whatever you like, as long as it's right
LAN at four in the morning, you don't talk nonsense, OK?
1. When the distance is fixed, the speed of the car is inversely proportional to the time
2. When the rectangular area is fixed, the length and width are in inverse proportion
3. When the total price is fixed, the unit price is inversely proportional to the quantity
Enumerate an example of quantity with inverse proportion function relation in life, the more the better
For example, when t is constant, PV = NRT, so v = NRT / P, where p is the independent variable and V is the dependent variable,
There are many examples of inverse proportion function in our life. In the following example, the relationship between X and Y is inverse proportion function
① A total of 10 L of water was consumed by X persons, with an average of 5 L per person;
② The volume of cylindrical bucket with bottom radius x DM and height y DM is π DM ^ 3;
③ The length of the wire is x cm and the radius of the circle is y cm;
④ Fill a bucket of water with a faucet for y
Please write the reason
The problem is wrong.
Examples of applying the properties of inverse proportion function in real life
Scale, when the weight of the object to be weighed is fixed, the weight of the weight and the distance between the weight and the fulcrum are inversely proportional function
RELATED INFORMATIONS
- 1. A cuboid becomes a cube when its height increases by 4 cm, and its surface area increases by 80 square cm. What is the cuboid's volume in cubic cm? There should be formulas
- 2. A cuboid wood block is cut off from both ends and its surface area is reduced by 80 square centimeters. How many cubic centimeters is the volume of the original cuboid? A cuboid block of wood, cut off from both ends of the cuboid for 2 cm, will become a cube, the surface area reduced by 80 square centimeters?
- 3. There is a rectangle, its length, width and height are three continuous natural numbers, and its volume is 210 cubic meters?
- 4. The total edge length of a cube is 36cm. After forming two identical cuboids, the total surface area of the two cuboids is larger than that of the original cube The total edge length of a cube is 36cm. After forming two identical cuboids, how much more is the total surface area of the two cuboids than that of the original cube?
- 5. Given that the a power of 10 = radical 2, the B power of 10 = 4 root 8, find the 2B power of 2a-3 molecule of 10
- 6. Put the test charge of the negative ninth power of Q1 = - 1 × 10 into the electric field P generated by the point charge Q, and the electric field force of Q1 is measured to be the negative sixth power of 1 times 10 If Q1 is removed and a point charge Q2 = 2 times 10 to the power of minus 8 is placed at P point, then the electric field force on Q2 is? What is the electric field strength generated by Q at P point? Direction?
- 7. There is a point charge with q = - 3 * 10 ^ - 6C, which moves from point a to point B in an electric field, and the charge does 6 * 10 ^ - 4J work against the electric field force, Move from point B to point C, the electric field force does 9 * 10 ^ - 4J work on the charge, and calculate the potential difference between AB and ac. if B is the zero potential point, the potential at point a is, and the potential at point C is, EPA =, EPC= Please give a detailed explanation
- 8. There are two point charges a and B in vacuum, and their charge quantity QA = 2qb. When the distance between them is 0.01cm, the interaction force is 1.8x10 to the - 5th power
- 9. When the distance between two identical metal spheres is r, the interaction force is f Now, if the spheres are separated after contact so that the distance between them is R / 2 and the interaction is 4f / 3, then Q1: Q2 is?
- 10. In vacuum, there are two identical metal spheres (both can be regarded as point charges) with charge quantity - Q1 and + Q2 (Q1 > Q2). When the distance between them is r, the Coulomb force between them is F. now put the two spheres back in contact, and the Coulomb force between them becomes f / 3, what is Q1: Q2
- 11. A rectangular iron plate, 30 cm in length and 25 cm in width. As shown in the figure, cut the square with a side length of 5 cm from four corners, and then make a box. How many ml is the volume of this box?
- 12. Two wires of the same length, one is a cuboid frame of 8 cm long, 5 cm wide and 5 cm high, and the other is a cube frame What is the edge length of this cube frame?
- 13. An aluminum can make a cube frame with an edge length of 8cm. If you make a cuboid frame with aluminum of 10cm long and 9cm wide, how high is the cuboid? Is the cuboid equal to the cuboid in volume?
- 14. A cube box, the edge length is 16. How many square decimeters does the box cover?
- 15. A cube box is 2 decimeters long. How many square decimeters is the surface area of the box? How many square decimeters is the area of the trademark pasted around?
- 16. The surface area of a cube whose edge length is 4 decimeters is (), the volume is (), and the total edge length is ()
- 17. A cube sheet of iron, with an edge length of 50 cm, cuts a 10 cm square from each of the four corners, and then makes a box without a cover. How many sheets of iron does this box use? What is its volume?
- 18. The square iron sheet with an area of 108 square centimeters is made into a square box without cover. The surface area of the box should be as large as possible. What is the size of the box
- 19. The cube is 1 decimeter long and? Cubic meter in volume
- 20. A cube box can just put a cylinder with a volume of 628 cubic centimeters. How many cubic centimeters is the volume of this box?