Mọi người giải nhanh giúp mình nha! Mình sẽ vote 5 sao! Cho hệ phương trình: 2x + y = m² + m (m² + 3)x + 2y =4 Tìm m để hệ phương trình: Có 1 nghiệm duy nhất Vô nghiệm Vô số nghiệm

Bài 4 l) 4(x – 5) – 3(x + 7) = -19 k) 7(x – 3) – 5(3 – x) = 11x - 5 l) 7(x – 9) – 5(6 – x) = -6 + 11x a. 5x – 16 = 40 + x b. 4x – 10 = 15 – x c. -12 + x = 5x – 20 d. 7x – 4 = 20 + 3x e. 5x – 7 = - 21 – 2x f. x + 15 = 7 – 6x g. 17 – x = 7 – 6x h. 3x + (-21) = 12 – 8x

Giải giúp dùm e vs mọi người e đang cần gấp

Giúp em với ạ, phần IV thôi cũng được ạ Em vô cùng cảm kích VI. Write a letter to complain about the noise. 1. I/ write/ this letter/ complain/ noise from Apartment 3C 2. I/ move into/ Apartment 2C/ November 1st 3. Since/ I move in/ my upstairs neighbors/ play/ stereo/ loudly/ night 4. I/ ask/ them/ turn it down/ several times already. 5. However, they/ not stop/ the noise yet. 6. I/ be/ a student/ and/ study/ every night 7. I/ fail/ final exam/ next month/ unless/ this noise/ stop 8. please talk/ my neighbors/ and ask/ turn down their stereo/ 9:00 9. I/ look forward/ hear/ you/ and see/ how/ you/ solve/ problem/ Sincerely/ Lan V. Change the following indirect sentences into direct statements. One example has been done for you. 0. I said that I was fine. -> I said: "I'm fine". 1. The teacher told his students that he would be busy the following month.  ………………………………………………………………………………………………………………… 2. Mm told me that she was sad then.  ………………………………………………………………………………………………………………… 3. One of my friends said that he liked learning English with his teacher.  ………………………………………………………………………………………………………………… 4. The doctor told me that I could leave the hospital that day.  ………………………………………………………………………………………………………………… 5. The landlady told me that I could use those bed covers.  ………………………………………………………………………………………………………………… 6. The gardener said that those flowers were not very fresh in that garden.  ………………………………………………………………………………………………………………… 7. The stamps collector said that he would attend a stamp contest the following year.  ………………………………………………………………………………………………………………… 8. The film director said that she will not willing to work then.  …………………………………………………………………………………………………………………

Cho tam giác ABC vuông tại A có AB = 16cm,BC=20cm.Trên tia đối của tia AB lấy điểm D sao cho AD =5cm.Tính độ dài đoạn thẳng CD.

a)(4x/x^2+4x+3)-1=6.((1/x+3)-(1/2x+2)) b)(-1/1-x)+(2x^2-5/x^3-1)=(4/x^2+x+1) c)(12x+1/6x-2)-(9x-5/3x-1)=(108x-36x^2-9/4(9x^2-1)

Viết 1 bài văn tả chiếc đồng hồ báo thức như hinh bên (k copy) bố cục đủ 3 phần dài cỡ 2 trang

Cho biểu thức P = x +2/x^2-5x+6 -x+3 /2-x - x+2 /x+3 và Q = 2 - x/x+1 với x khác -1, 2, 3 a. Tính giá trị của Q khi x = 16 b. Rút gọn biểu thức M = P : Q c. Tìm x để 1/P = -3/2

Giúp mik câu 4 nhé mik cảm ơn ạ

what would the world be likeif Columbus had taken a different route ? giúp mik với