Mathematics reflection questions for junior high school 2

Updated on educate 2024-02-08
8 answers
  1. Anonymous users2024-02-05

    You're in the second year of junior high school, hehe, we do this kind of question too! The following are all my own shots, I hope to be satisfied.

    Solution: Set up x basketball tickets and y table tennis tickets.

    x+y=10

    1000x+500y=8000

    x= 6 y=4

    There are x basketball tickets, x table tennis tickets, and 10-2x table tennis tickets.

    1000x+800x+500 (10-2x) is less than or equal to 8000 (symbols cannot be played).

    500 (10-2x) is less than or equal to 1000x

    Get x greater than or equal to less than or equal to.

    Because tickets can only be an integer.

    So x=3 is 3 tickets for the men's basketball team.

    3 football tickets.

    4 table tennis tickets.

    I've worked my own, hopefully.

  2. Anonymous users2024-02-04

    6 tickets for men's basketball and 4 tickets for table tennis.

  3. Anonymous users2024-02-03

    1) If all the funds are used to book men's basketball tickets and table tennis tickets, ask him how many men's basketball tickets and table tennis tickets can he order?

    6 men's basketball tickets.

    4 table tennis tickets.

    2) If there is a fund of 8,000 yuan and the total number of tickets remains the same, he wants to book the three types of ball tickets in the following table, of which the number of men's basketball tickets is the same as the number of football tickets, and the cost of table tennis tickets does not exceed the cost of men's basketball tickets, how many tickets can he book for each of the three ball games?

    3 men's basketball tickets.

    3 football tickets.

    4 table tennis tickets.

    Addendum: The landlord still uses the remaining 600 yuan to buy something to eat

  4. Anonymous users2024-02-02

    1) 8 male blue and 4 table tennis.

    2) 3 men's blue, 3 football, 5 table tennis.

  5. Anonymous users2024-02-01

    1) 6 men's basketball tickets.

    4 table tennis tickets.

    2) 3 men's basketball tickets.

    3 football tickets.

    4 table tennis tickets.

  6. Anonymous users2024-01-31

    1) Assuming that the men's basketball ticket x and table tennis ticket Y can be determined, the following equation can be obtained from the above conditions:

    1000x+500y=8000

    x+y=10

    According to the above equation, the answer can be quickly obtained: x=6, y=4, that is, 6 tickets for men's basketball and 4 tickets for table tennis.

    2) Suppose you can determine x tickets for men's basketball, y for table tennis tickets, and z for football, and the following equations can be obtained from the above conditions:

    1000x+500y+800z=8000

    x+y+z=10

    x=z The above equation is slightly more complicated, but the data of the ticket can only be an integer, therefore.

    According to the above equations, three sets of answers can be quickly obtained:

    1) x=z=1,y=8,2)x=z=2,y=6,3)x=z=3,y=4, and because the cost of table tennis tickets does not exceed the cost of men's basketball tickets, only the answer to the (3) group can be taken, 3 men's basketball tickets (3000 yuan), 4 table tennis tickets (2000 yuan), 3 football tickets (2400 yuan), and more than 600 yuan.

  7. Anonymous users2024-01-30

    1. Original formula = [(4x -10x+8)-(5x -6x+8)]*2x -3).

    4x²-10x+8-5x²+6x-8)(2x²-3)=(-x²-4x)(2x²-3)

    2x^4+3x^2-8x^3+12x

    2. When x=-3.

    Original formula = -2(-3) 4+3(-3) 2-8(-3) 3+12(-3)=-162-27+216-36

    9. Adopt it in time.

  8. Anonymous users2024-01-29

    9。Proof: In the triangle ABC, because AB is perpendicular to AC, the ulnar angle A=90 degrees, so the angle B is congruent with the angle ACB, and the angle B is congruent with the angle 1, so the angle ACB = angle 1, so the oak beam AD BC, such as He.

    Because angle 1 = angle 2, so ad ef, so ad bc ef.

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