Senior high school mathematics compulsory 5 chapter 3 inequality review reference questions answers

There is a book called "complete explanation of middle school teaching materials", which is the Venus education of Shaanxi publishing house. It has detailed answers with high accuracy
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Senior high school mathematics compulsory 5 review questions and answers (group A)
High school mathematics compulsory module (1-5) of PEP

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1. When a farm is building water conservancy, 48 people are sent to complete the work of digging and transporting soil. If each person digs 5 cubic meters of soil or transports 3 cubic meters of soil on average every day, how to allocate the number of people to dig and transport soil so that the excavated soil can be transported away in time?
2. When a farm is building water conservancy, 48 people are sent to complete the work of digging and transporting soil. If each person digs 5 cubic meters of soil or transports 3 cubic meters of soil on average every day, how to allocate the number of people to dig and transport soil so that the excavated soil can be transported away in time?
3. When a farm is building water conservancy, 48 people are sent to complete the work of digging and transporting soil. If each person digs 5 cubic meters of soil or transports 3 cubic meters of soil on average every day, how to allocate the number of people to dig and transport soil so that the excavated soil can be transported away in time?
4. A group of migrant workers participate in the excavation and transportation of soil for water conservancy projects. On average, each person digs 5 cubic meters or transports 3 cubic meters of soil every day. If 24 people are arranged to dig and transport soil, it is necessary to A group of migrant workers participate in the excavation and transportation of soil in water conservancy projects. On average, each person digs 5 cubic meters of soil or transports 3 cubic meters of soil every day. If 24 people are arranged to dig and transport soil, they should be arranged____ People dig____ When people transport soil, the excavated soil will be transported away in time Countable system of linear equations of two variables Understand it completely
5. A group of migrant workers participate in the excavation and transportation of soil at the construction site. On average, each of them digs 5 cubic meters or transports 3 cubic meters of soil every day. If 24 people are arranged to dig and transport soil, they should be arranged______ Only when people transport the soil can the excavated soil be carried away in time
6. A group of migrant workers participate in the excavation and transportation of soil at the construction site. On average, each of them digs 5 cubic meters or transports 3 cubic meters of soil every day. If 24 people are arranged to dig and transport soil, they should be arranged______ Only when people transport the soil can the excavated soil be carried away in time
7. The following formulas are given: 32-12 = 8 = 8 × 1, 52-32 = 16 = 8 × 2, 72-52 = 24 = 8 × 3, 92-72 = 32 = 8 × 4 If you look at the above series of formulas, what rules can you find? Express this rule with algebraic formula
8. 1 ^ 2 + 1 = 1 * 2 2 ^ + 2 = 2 * 3 3 ^ 2 + 3 = 3 * 4
9. The following formulas are given: 32-12 = 8 = 8 × 1, 52-32 = 16 = 8 × 2, 72-52 = 24 = 8 × 3, 92-72 = 32 = 8 × 4 If you look at the above series of formulas, what rules can you find? Express this rule with algebraic formula
10. A regular string of numbers: 1, - 2,3, - 4,5, - 6 What formula can be used to express each of his terms? (algebraic formula)?
11. Bo is the middle line on the hypotenuse of right triangle ABC, extend Bo to point D, make Bo = do, connect ad CD, prove that quadrilateral ABCD is a rectangle
12. Given the parallelepiped abcd-a'b'c'd '. Find the vector AC' + the vector d'b-the vector DC
13. Give examples of using neutralization reaction in life
14. A regular hexagon is divided into eight parts of equal area This is a mathematical modeling problem, can not be measured
15. A mathematical problem of linear equation with one variable If you plant 10 saplings per person, there will be 6 saplings left; if you plant 12 saplings per person, there will be 6 saplings missing. How many people plant trees?
16. A plan of rectangular foundation is drawn on a 1 / 2000 scale drawing. How many square meters is the actual floor area of this foundation? Please write a formula
17. Arrange 3 ^ - 55,4 ^ - 44,5 ^ - 33 from small to large
18. If △ ABC ∽ a'b'c ', BC; b'c' = 2; 3, the sum of their circumferences is 15 and the difference of their areas is 20, find the respective circumferences and areas of the two triangles
19. The lower part of a trapezoid is three times the upper part. The upper part is extended by eight centimeters to form a parallelogram with an area of 288 square centimeters. The area of the original trapezoid is calculated
20. What is the probability that the distance between P and each surface area of the cube is greater than 3 / a if we randomly take a point P in the cube ABCD ABCD with edge length a