Cho góc tù xOy. Bên trong góc xOy , vẽ tia Om sao cho góc xOm = 90 độ và vẽ tia On sao cho yOn = 90 độ. a, Chứng minh : góc xOn = góc yOm b, Gọi Ot là tia phân giác của góc xOy Chứng minh : Ot là tia phân giác của mOn

Help meeeeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeee

giúp em với các bạn ơi làm chi tiết giùm mikl nha

giup minh 5 cau trach nghiem tieng anh voi nha mng ( 50 diem )

Mọi người giúp mình câu này với

Calli: Chán NL: Sáng nay Hoidap vắng ghê

Hãy cho biết số nguyên tử hoặc phân tử có trong lượng chất sau: 0,1 mol nguyên tử H 10 mol phân tử H2O 0,24 mol phân tử Fe 0,15 mol phân tử CO2; 0,01 mol phân tử H2 1,44 mol nguyên tử C;

Vì sao nói cây có hoa là một thể thống nhất?

Hòa 480g dung dịch NaOH x% qua 2,8 Lưu Huỳnh trioxit (SO3) đktc a.tính khối lượng muối sinh ra b.tìm x c.tính C% dung dịch sau phản ứng

. You might win $ 1500, and then you’d travel to Singapore. (if) -> You’d travel…………………………………………………………….. $ 1500. 63. Our electric fan isn’t working properly and we feel hot. (would) -> If our…………………………………………………………………….. so hot. 64. Her brother should give up smoking to protect his health. (would) -> If he……………………………………………………………… improve his health. 65. Perhaps my family would go to Hue to visit our grandparents. (went) -> If my family………………………………………………… visit our grandparents. 66. I think you shouldn’t talk too much in class. (you) -> If I………………………………………………………………… in class. 67. His sister doesn’t speak English well enough to work for that foreign company. (better) -> If his sister………………………………………………….. for that foreign company. 68. My roommates don’t have enough money so they can’t travel to Nha Trang. (could) -> If my roommates……………………………………………………… Nha Trang. 69. We’re not as rich as Rockefeller so we can’t buy a big house here. (were) ->If we……………………………………………………………………………… here. 70. I won’t go out if it doesn’t stop raining. (unless) -> I won’t…………………………………………………………… raining. 71. She wouldn’t write unless she heard some news. (if) -> She wouldn’t………………………………………………………….. any news. 72. “I’ll kill your son if you don’t give us money.” The kidnapper said. -> The kidnapper …………………………………………………………………… 73. I’ve lost interest in going to the same places all the time. -> I am fed …………………………………………………………… 74. “I’m sorry; I didn’t ring you to say I would not come.” -> She apologized …………………………………………………… 75. “You stole my gold watch.” My neighbor said to him. -> My neighbor accused ………………………………………………..