Cho tỉ lệ thức a/b = c/d. chứng minh rằng ab/cd = a^2 - b^2/c^2 - d^2

Câu cuối! Vẽ con lợn cute hoặc mầm cute cx được (mầm là phải 2 con cute) NL> Tuyển thêm heo :)) @KDH?

giải nghĩa câu tục ngữ một cây làm chẳng nên non ba cây chụm lại nên hòn núi cao 5 đến 7 dòng

Một hình thang có đáy lớn 32m , đáy bé 26m . Nếu tăng đáy bé thêm 4m nữa thì diện tích tăng thêm 32m vuông . Tính diện tích hình thang ?

Cho tỉ lệ thức a/b = c/d. chứng minh rằng a + b/a - b = c + d/c - d

they gave me address _____ send them a brochure A. so that i B. in order to C. so that i could D. in order that i will TÌM ĐÁP ÁN ĐÚNG VÀ GIẢI THÍCH CÁC ĐÁP ÁN KHÁC

Giải hộ mình câu b đi anh em ơi

mọi người giú mình với ạ, mình đang cần gấp, hứ cho ctlhn cho ai làm nhanh nhất

1. How much time a day do you waste ________ to the Internet? A. surfing B. getting access C. responding D. posting 2. ________ felt annoyed that the promotion of new products was unsatisfactory. A. Conservationists B. Computers C. Congratulations D. Consumers 3. His father has taught Physical Education this school __________ 2012. A. in / in B. at / in C. at / since D. on / for 4. There will be a culture festival taking place ________ June 1st. A. since B. at C. on D. in 5. The shrine of a national hero we paid a visit is at the top of the mountain. A. who B. which C. whose D. where 6. TV station has broacast that news. , I can’t watch it. A. But B. However C. Therefore D. Moreover 7. Garbage bins around the schoolyard so that students can keep their waste into them. A. should put B. was put C. is put D. should be put 8. The teacher told her students that they the Entrance examination three days after. A. will do B. would do C. are going to do D. did 9. _ “I won the first prize of the game.” – “_______” A. Cheers. Come on! B. Good luck next time! C. Well done. You’re great. D. You are welcome. 10. ¬– “ ” – “Don’t worry. I can update it for you.” A. Are you worried? B. My Ipad is out of date again. C. Are you looking for your Ipad? D. I suggest fixing your Ipad. II. Look at the sign / picture. Choose the best answer (A, B, C or D) for each sign / picture. (0.5 pt) 11. This sign means: A. You can’t buy cigarettes here. B. We can smoke here. C. You can’t smoke here. D. You can walk here. 12. What is the disaster in this picture? A. tornado B. flood C. volcano D. typhoon

Mark the answer that has the meaning stays the same with the given sentence