Giải giúp em vs Ta có hệ pt 1/x+1/y=1/12 4/x+10/y=2/3

[1234^2020+(-5).367].[(-3).2+6]

Trong không gian oxyz lập phương trình mặt cầu tâm I(5,-3,7) và có bán kính r=2

làm đề 1 và đề 2 hộ mik nha! MIK VOTE 5 ☆ cho

Giúp mk toan bộ bai nay nha ! Cam ơn !

Tìm x biết:x mũ 2 ( x + 2 ) + 4 ( x+2 ) = 0

C. Reading Put a word from the box in each gap to complete the following passage. bedroom; television; country; chairs; likes; rooms; bookshelf; window; are; cool Mai’s house is in the (1)…………………… It is big and clean. Her house has six (2)………………. ……There is a living room, two (3)…………………., a bathroom, a kitchen and a toilet. There is a cupboard, a table and six (4) ………………….in the living room. There is a (5) ………………….on the cupboard. Mai’s bedroom is small. In her room, there is a big (6)…………….so it’s light and (7)…………………There is a computer on the table. There are many books on the …………….There (9)…………….some pictures on the wall. Mai (10) ………………….her bedroom best in the house. MỌI NGƯỜI ƠI GIÚP EM VỚI

Tính theo cách hợp lý 34+35+36+37-14-15-16-17

Who are the (1) __________ drivers? Which drivers are the safest on the roads? According to a recent survey, young and inexperienced (2) __________ are the most likely to have an accident. Older drivers are more (3) __________. Young men have the worst accident records of all. They often (4) __________ faster cars with bigger engines. One of the (5) __________ interesting facts in the survey is that passengers have an effect on the driver. When men have (6) __________ friends in the car, their driving become worse. When their wife or girlfriend is in the car, (7) __________, their driving is better. But opposite is true for women. Their driving is (8)__________ dangerous when their husband or boyfriend is in the car

Cho tam giác abc các tia phân giác của góc b và góc cắt nhau ở o.kẻ od vuông góc ac,oe vuônh góc ab. Chứng minh od=oe