Cho hai đường tròn (O;R) và (O';R') (R>R') tiếp xúc ngoài tại A. Vẽ các bán kính OB//O'D với B, D ở cùng phía nửa mặt phẳng bờ OO'. Đường thẳng DB và OO' cắt nhau tại I a)Tính góc BAD b)Tính OI biết R=3cm, R'=2cm c)Tính O theo R và R' d)CMR: BD, OO' là những tiếp tuyến chung ngoài của (O) và (O') đồng quy

giải hộ mik vs ạ vốt 5 sờ ta cho bn nào nhanh

Thiếu thời gian nhàn rỗi cuộc sống con người sẽ trở nên nghèo nàn. Nghị luận 200 chữ

y=căn m^2-2 tìm m để hàm số trên là hàm số bặc nhất

ou can buy 1000 I here is a large park in the neighbourhood. he writer likes to live in his neighbourhood. VRITING Rearrange the words or phrases to make meaningful sentences. acwe/ first/ where/ go/ this morning/ shall? the cafeterial and/ a cold drink/let's/ get/ to/ go. like/ you/ the countryside/ do/ living/ in? neighbourhood/ post office/ in/ there/ your/ a/ is? mel you/ the wayl could/ the Japanese Bridge/ to/ tell/ please? h houses/ are/ there/ historic/ Hoi An/ many/ ancient town/ in. polluted/ smoke/ the air/ is/ with/ factories/ from. much/ than/ living in a big city/ expensive/ is/ living in the countryside/ more

viết 1 bài văn nghị luận về sức mạnh của niềm tin trong cuộc sống

a,b,c>0, abc=1; CMR$\frac{a^3}{(b+2)(c+3)}+\frac{b^3}{(c+2)(a+3))}+\frac{c^3}{(a+2)(b+3)}\geq\frac{3}{4}$

ou can buy 1000 I here is a large park in the neighbourhood. he writer likes to live in his neighbourhood. VRITING Rearrange the words or phrases to make meaningful sentences. acwe/ first/ where/ go/ this morning/ shall? the cafeterial and/ a cold drink/let's/ get/ to/ go. like/ you/ the countryside/ do/ living/ in? neighbourhood/ post office/ in/ there/ your/ a/ is? mel you/ the wayl could/ the Japanese Bridge/ to/ tell/ please? h houses/ are/ there/ historic/ Hoi An/ many/ ancient town/ in. polluted/ smoke/ the air/ is/ with/ factories/ from. much/ than/ living in a big city/ expensive/ is/ living in the countryside/ more Complete the second sentence so that it means the same as the first sentenc Shall we go to the Japanese Covered Bridge first? Let's

Cứu em với gấp ạ! a,b,c>0 CMR $\frac{a^3}{c(a+2b)}+\frac{b^3}{a(b+2c)}+\frac{c^3}{b(c+2a)}\geq\frac{a+b+c}{3}$

No need to go any (far) Climbing mountains is (dangerous) than hiking We need to buy a (big) table but is has to be (cheap) than the one we saw yesterday I think Madonna is (famous) than Janet Jackson Its (far) to the bank than I thought I*ll talk to my motther .Her advice will be (useful) than yours Life is (complicated) than you believed it to be Help mình với