Dương Nguyên Khang
Giới thiệu về bản thân
Manchester United 4ever
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2023-03-02 22:20:14
bán kính: 42 : 2 = 21cm
Diện tích: 21. 21. 3,14 = 1384,74 cm2
2023-02-12 21:29:51
2023-02-04 15:32:44
b nha bạn
2023-02-04 15:32:27
mk thấy db cho số ko đẹp lắm nhưng kệ đi
2023-02-04 15:32:04
ta có: x/2 = y/5
=> x = 2/5. y
=> (2/5. y)2 + y2 = 76
=> 4/25. y2 + y2 = 76
=> 29/25. y2 = 76
=> y2 = 76 : 29/25 = 1900/29
=> y = \(\sqrt{\dfrac{1900}{29}}\)
2023-01-02 21:46:04
=> 123 - x = 8 + 67
=> 123 - x = 75
=> x = 123 - 75
=> x = 48
Vậy x = 48
-----Manchester United-----
2023-01-02 10:21:46
2023-01-02 10:05:27
2023-01-02 10:04:37
x/y = 2,5
x + y = 75
=> x = 2,5y
=> 2,5y + y = 3,5y = 75
=> y = 75/3,5 = 150/7
=> x = 150/7 * 2,5 = 375/7
2023-01-02 10:03:08
= 24 x 427 + 24 x 573
= 24 x (427 + 573)
= 24 x 1000
= 24000
