Exercise: choose the best anwer

Giải hộ ạ và giải thích luôn nha cảm ơn mọi nguòi (iu)🤫❤️

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tìm ba số x , y, z biết : x : y : z = 3 : 8 : 5 và 3x + y - 2z = 14

II. Add two letters to any place of each word to form another word with its definition given. 1. pope → _______________ persons in general. 2. plain → _______________ give a reason for sth. 3. at → _______________ a small hollow structure for traveling in on water. 4. confide → _______________ feeling or showing certainty about sth. 5. purse → _______________ an intention; an aim or a function of sth. 6. please → _______________ a state or feeling of being happy or satisfied. 7. rend → _______________ a person one knows or likes. 8. press → _______________ show a feeling, an opinion by words, looks or actions. 9. an → _______________ an idea or a method that has been thought about in detail in advance. 10. in → _______________ make musical sounds with the voice in the form of a song.

a/ 4 - 2/3 -10/24 b/ 12/7 x 3/4 : 3/14 c/ 2 + 5/2 : 18

II. Add one letter to any place of each word to form another word with its definition given. 1. air → _______________ two things of the same kind used together. 2. side → _______________ move smoothly along an even surface. 3. tip → _______________ a short journey for pleasure or for a particular aim. 4. cap → _______________ a place where people live temporarily in tents or huts. 5. ring → _______________ carry sth 6. ten → _______________ a shelter made of canvas used for camping. 7. crow → _______________ a large number of people gathering together. 8. plan → _______________ a living thing that grows in the earth with a stem. 9. not → _______________ a short informal letter. 10. eight → _______________ a measure of how heavy sb/sth is

Giải hộ em bài 10 ạ em cần gấp lắm

a, √3 tanx - 3cotx + 3 - √3 = 0 b, cos2x + sin2x - sin^2 2x = 0 c, 3cos^2x + sin^2x - 2√2 sin2x = 0

Mong mọi người giải nhanh cần gấp