cho tu giac abcd ke bf//cd f thuoc ac ke cg// ab gthuoc bd.cMR fg//ad

Bài 1: Tìm x € Z, biết: |5x-2|<=3 Bài 2: Tìm các số nguyên x và y sao cho: a) (2x+1). (y-2)=3 b) x.y+3x-7y=21 c) x.y=5 và x-y=-4 Bài 3: Tìm x biết: |2x-5|=1

Em hãy đóng vai làm nhân vật Kiều Phương để miêu tả lại người anh trai ( trong văn bản : Bức tranh của em gái tôi )

Rewrite sentences so that it has a similar meaning to the frist 1,he has never played a computer game Before This Is ... 2,I Kicked The Ball Into The Goal Yesterday →The Ball... 3 We Haven't Seen Him Since We Left University →the Last Time... 4"I Have a German Lesson This Afternoon And I Haven't Done My Homework Yet "said The Small Boy 5=>the Small Boy Said..... 6I Last Wrote To My Uncle In May =>i Haven't... 7I Last Wrote TO My Uncle In May →i Haven't... 8 How Long Is It Since You LasT Saw John ? → 9,This Is The Best Computer I Have Ever Used I Have Never... 10,"can You Qopen Your Bag ,Please?"said To The Customs Officer → 11,One Of My Friends Said That She Liked Learning EngLish With Her Teacher →one Of My Friend Said To Me 12,Nobody Has Used This Machine For 2 Years →this Machine 13,The Weather Is Unpleasant Today But Yesterday It Was Worse →the Weather Isn't

giải phương trình sau 8.(x+1/x)^2 +4.(x^2+1/x^2) = (x+4) + 4.(x+1/x)^2.(x^2+1/x^2) giúp mk với ạ mk đang cần gấp

Tính ttoongr 100 số tự nhiên đầu tiên for... do

. Complete the following sentences using a different verb or expression. Don’t change the meaning. Number 0 has been done for you as an exmaple. 0. She never drives to the shops. She never goes to the shops by car. 1. In bad weather, I take the bus to school. In bad weather, I __________________ to school ____________________. 2. I always walk to my grandparents’ house. I always ___________________ to my grandparents’ house ______________________. 3. I usually go to school by bike. I usually __________________________ to school. 4. Do you go to school on foot? Do you ____________________________ to school? 5. My father usually goes to work by car. My father usually ________________________ to work. 6. My mother drives me to the bus station. My mother _____________________ me to the bus station by ___________.

Tách riêng Ag ra khỏi hỗn hợp Fe, Mg, Ag

Bài 2. Cho bốn điểm A, B, C, D nằm ngoài đường thẳng a. Đoạn thẳng AD có cắt đường thẳng a không nếu các đoạn thẳng AB, AC, CD đều cắt đường thẳng a ?

740mmHg=...cmHg=...Pa 100640Pa =...cmHg =...mmHg 800cmHg=...N/m^2