Cho 10,2 gam hỗn hợp hai andehit kể tiếp nhau trong dãy đồng đẳng của andehit no, đơn chức, mạch hở tác dụng với dung dịch AgNO; trong NH, thu được 43,2 gam kết tủa. Xác định công thức phân tử của hai andehit.
Viết một đoạn văn ( khoảng 150 đến 200 chữ ) trình bày cảm nghĩ về một truyện cổ tích mà em yêu thích, trong đó sử dụng ba trạng ngữ
phần củng cố á m.n bài 19 là:Môi Trường Hoang Mạc bài 20 là:Môi Trường Đới Lạnh hứa vote 5* cho ai làm giúp mình ạ🥺
mọi người giúp em với tí nữa phải nộp r mà hk bt làm ai giúp em hứa sẽ vote cho 5 sao và ht luôn
cho hình vẽ biết AB//EF//DC ;ED = 1/3 AD ,CF bằng 1/3 BC; AB = 8 cm ,EF= 16 cm. Tính x
Combine the sentences using the conjunction given: 1. He is very rich. He isn’t happy. Although No matter However 2. She says anything. I don’t believe her. Although No matter Whatever 3. He tried. He was not successful. Although No matter However 4. It was cold. He didn’t wear any warm clothes. Although No matter However 5. You return at any time. She waits for you. Although No matter Whenever II. Change clauses of concession to phrases: 1. She didn’t eat much though she was hungry. 2. He couldn’t solve the problem though he was good at Maths. 3. Although it was noisy, I kept on studying. 4. Although he is strong, I’m not afraid of him. 5. Although it rained heavily, I went to school on time. 6. Mr. Pike doesn’t wear glasses though he is over sixty. 7. Although his English was good, he wasn’t chosen. 8. Mary will take a plane even though she dislikes flying. 9. Although he took many kinds of exercises, he got fatter and fatter. 10. Although Mary was sad, she managed to smile. làm nhanh hộ mình nha
Giúp mình với mn ơiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
help me pleaseeeeeeeeeeeeeeeeee T.T
$\sqrt[]{6- √11}$ -$\sqrt[]{6 +√11}$
a) x2y2+2x2+y2+2 b) a2 - b2 + a - b
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