Bài 1: Một hay nhỉ thang có TBC 2 đáy là 42cm, chiều cao hình thang là 12cm. Tính diện tích hình thang đó Bài2: Một thửa ruộng hình thang vuông có đb=chiều cao và= nửa đáy lớn. Thửa ruộng đó đc mở thành hình chữ nhật. Tính diện tích hình thang, bt diện tích phần mở rộng là 5 dam2

Dịch các từ tiếng anh cs trong đề cho mk đc ko mk hứa sẽ vote 5 sao và bình chọn câu trả lời hay Nhất cho ai trả lời đầu tiên nà Thank you♥️♥️♥️

chữ số tận cùng của 405^n +2^405+m^2 (m,n thuộc N m khác 0 vote 5* cho bạn nào nhanh nhất!

Làm giúp mk câu b và c của bài 20 nha Mk cần gấp Please !!!

EXERCISE IV : Rewrite the following sentences. 1/ People don’t learn a foreign language in a short time. - ______________________________________________________ 2/ Did anyone ask any questions about me ? - ______________________________________________________ 3/ Henry wrote that book years ago, didn’t he ? - ______________________________________________________ 4/ I wasn’t introduced to any of the guests. - ______________________________________________________ 5/ What sort of research are they doing in the laborotary ? - ______________________________________________________ 6/ You should place matches out of reach of children. - ______________________________________________________ 7/ People say that inflation is getting out of control. - ______________________________________________________ 8/ We’ll have finished all the work by the weekend. - ______________________________________________________ 9/ I heard her singing very beautifully. - ______________________________________________________ 10/ Scientists started discovering the universe thousands of years ago. - ______________________________________________________ 11/ Nothing can be gained without effort. - ______________________________________________________ 12/ The robbers forced the bank manager to hand over the money. - ______________________________________________________ 13/ They let us go. - ______________________________________________________ 14/ The police stopped Tom on the highway and made him show his I.D card. - ______________________________________________________ 15/ Write your address on the back of the cheque. - ______________________________________________________ 16/ Where did your child find the keys ? - ______________________________________________________ 17/ Some people think he is a dangerous criminal. - ______________________________________________________ 18/ They will have to sign these documents. - ______________________________________________________ 19/ The workers are going to pull down that old building. - ______________________________________________________ 20/ No one told me the truth. - ______________________________________________________ EXERCISE V : 1. Yes - No questions : a. Do they teach English here ? - ___________________________________________________ b. Will you invite her to your wedding party ? - ___________________________________________________ c. Did the teacher give some exercises ? - ___________________________________________________ d. Is she going to write poem ? - ___________________________________________________ e. Have they changed the window of the laboratory ? - ___________________________________________________ f. Is she making big cakes for the party ? - ___________________________________________________ g. Has Tom finished the work ? - ___________________________________________________ h. Are the police making inquires about the thief. - ___________________________________________________ i. Must we finish the test before ten ? - ___________________________________________________ j. Will buses bring the children home ? - ___________________________________________________ 2. Wh - questions : a. Why didn’t they help him ? - ___________________________________________________ b. How many games has the team played ? - ___________________________________________________ c. Where do people speak English ? - ___________________________________________________ d. Who are they keeping in the kitchen ? - ___________________________________________________ e. How can they open this safe ? - ___________________________________________________ f. What books are people reading this year ? - ___________________________________________________ g. How did the police find the lost man ? - ___________________________________________________ h. Who looked after the children for you ? - ___________________________________________________ i. How long have they waited for the doctor ? - ___________________________________________________ j. What time can the boys hand in their papers ? - ___________________________________________________ 3. Sentences with two Objects : a. The teacher gave each of us two exercise books. - ___________________________________________________ b. Someone will tell him that news. - ___________________________________________________ c. They had sent enough money to these poor boys. - ___________________________________________________ d. They have given the women in most countries in the world the right to vote. - ___________________________________________________ e. They paid me a lot of money to do the job. - ___________________________________________________

Tìm 1 từ đồng nghĩa với " dềnh dàng "

Cho tam giác ABC. Từ D trên BC, kẻ các đường thẳng DE//AB DF//AC. CM: AF/AB + AE/AC = 1 Sẽ vote 5* ạ

EXERCISE II : Turn into the passive voice. 1/ He is running his own restaurant. - ______________________________________________________ 2/ The secretary opens the mails every morning. - ______________________________________________________ 3/ The teacher doesn’t allow me to take the seat by the window. - ______________________________________________________ 4/ Tom’s absence worried his mother. - ______________________________________________________ 5/ They are building a new school in this town. - ______________________________________________________ 6/ You should finish the report right now. - ______________________________________________________ 7/ We shall discuss the matter in the afternoon. - ______________________________________________________ 8/ Are you going to post this letter ? - ______________________________________________________ 9/ He has to pay the bills before the fifth of the month. - ______________________________________________________ 10/ No one has opened that box for the past hundred years. - ______________________________________________________ 11/ The boy screamed while the dentist was pulling out one of his teeth. - ______________________________________________________ 12/ The enemy used to attack the bay. - ______________________________________________________ 13/ The fire has destroyed many houses. - ______________________________________________________ 14/ The children are carrying the chairs into the house. - ______________________________________________________ 15/ They awarded him the Nobel Prize for medicine in 1946. - ______________________________________________________ 16/ We saw him leave the office at 6 o’clock this morning. - ______________________________________________________ 17/ My parents didn’t let me go to school this morning because I was ill. - ______________________________________________________ 18/ You ought to water these plants once a week. - ______________________________________________________ 19/ People saw her driving a car near the bridge. - ______________________________________________________ 20/ They said that he was the richest man in the town. - ______________________________________________________ 21/ Scientists began to carry out researches on AIDS in 1981. - ______________________________________________________ 22/ The boy knew that they were praising him. - ______________________________________________________ 23/ Everybody believed that he had died of lung cancer. - ______________________________________________________ 24/ They hadn’t built the bridge when we first came here. - ______________________________________________________ 25/ I can assure you that I will arrange everything in time. - ______________________________________________________ EXERCISE III : Change to the active voice. 1/ Progress in science is being made day after day. - ______________________________________________________ 2/ The palace was designed by a French architect. - ______________________________________________________ 3/ The road in front of my house has been paved. - ______________________________________________________ 4/ You can see that the dishes haven’t been washed. - ______________________________________________________ 5/ Our salaries will not be increased this year. - ______________________________________________________ 6/ Wasn’t that theatre built two years ago ? - ______________________________________________________ 7/ The problem may be discussed again. - ______________________________________________________ 8/ My brother has been offered a well-paid job. - ______________________________________________________ 9/ It is reported that the war started again in South America. - ______________________________________________________ 10/ I was told that I was going to be appointed manager of this company. - ______________________________________________________ - ______________________________________________________

Làm giúp mk câu b và c của bài 20 nha Mk cần gấp Please !!!

Một vật được ném thẳng đứng lên trên ở vị trí cách đất 3m với vận tốc v 0 . Đến vị trí A vật dừng lại để chuyển động đi xuống, cho A cách đất 48m. Chọn mốc thế năng tại đất, lấy g = 10m/s2 a) Tìm vận tốc v 0 b) Khi qua vị trí B vật có thế năng bằng một nữa động năng. Tính vận tốc của vật ở vị trí này.