Cho ΔABC có AB = AC. Gọi M là trung điểm của BC. CM: a) ΔAMB = ΔAMC b) AM là tia phân giác của ∠BAC c) Đường thẳng a đi qua B, a ⊥ BA cắt AM tại I. CM: CI ⊥ CA giúp mình với, mình cần câu c thôi

Tìm số dư trong phép chia 2^50 chia 7+n

phần trắc nghiệm mọi người chỉ cần ghi đáp án A,B,C,D thôi ạ, nhớ ghi số la mã nữa nha

Mọi người ơi giúp mik 2 bài này với mik hứa ai làm nhanh cho ctlhn

dụng cụ dùng để đo hiệu điện nêu ký hiệu và đơn vị hiệu điện

1 The game took place although it rained heavily. -->In spite of 2.In spite of a good performance, she lost the match -->Although 3 Trinh cong son is dead. He composed many famous songs. -->Trinh cong son 4. The concert was cancelled beacause the singer was ill. -->Beacause of 5. The weather was good, but people still want them. --> 6.If you donot learn hard,you will fail in you exam. --> 7.Although he's got a french name ,he is in fact American. -->Despite 8 I decided to accept the job although the salary was low -->In spite of 9.In spite of her ill ness ,my mother never complained. -->Although

Complete the sentences with a word or phrase from the box. era ; fierce ; times ; preyed on 1. Dinosaurs left us clues. They tell us about life in a different ......... 2. Some dinosaurs were predators. They ..................other dinosaurs. 3. Nizar Ibrahim is a palaeontologist. He discovered the bones of a dinosaur three ................. longer than a car.

Chọn đáp án đúng: In the modern world, people depend on energy to power their everyday lives. A wide range of power-run devices and modern conveniences (1)...................................., and although it may seem that we will not be in danger of living without those conveniences, the fact is that many supplies of energy are running out rapidly. Scientists are constantly (2)...................................... new sources of energy to keep modern society running. Whether future populations will continue to enjoy the benefits of abundant energy will depend (3)............................... the success of this search. Coal, oil and natural gas are now being used widely. (4).............................., these supplies are limited, and they are a major source of pollution. Therefore, the existing alternative energy sources must be improved or futher explored and developed. These include nuclear, water, solar, and wind power, as well as energy from new, (5)...................................... types of fuels. Each of these, however, has advantages and disadvantages. 1 A are used B used to C are using D use 2 A looking into B searching for C researching D finding 3 A on B for C with D in 4 A moreover B because C although D however 5 A polluting B polluted C nonpolluting D pollution

MỌI NGƯỜI GIẢI 2 BÀI HỘ MÌNH Ở DƯỚI ẢNH NHA! MÌNH CẢM ƠN!

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