Cho S.ABC SA=SB=SC =a ; góc ASB=60;BSC=90; ASC=120 .M,N ∈ AB;SC sao cho $\frac{NC}{SC}$ =$\frac{MA}{AB}$ khi MN min thì $V_{S.AMN}$ =?

`\sqrt{(5-2\sqrt{6})^2}-\sqrt{(5+2\sqrt{6})^2}`

Ai giúp mik câu 4 với ( Bh mik đang cần gấp) hứa 5* + ctlhn

Làm đầy đủ vs làm gt và kl nựa ạ

1, Công thức tính nhiệt lượng toả ra của một vật để hạ nhiệt độ 2, Em hãy viết phương trình cân bằng nhiệt Giúp mình tý nha Hứa vote 5*

giai va giai thich vi sao ho e vs em cam on 1 My father (not/ play) ___________any sport since last year 2. I’d better have a shower. I (not/have) ___________ one since Thursday 3 I don’t live with my family now and we (not/see) ___________ each other for five years. 4 I________ just (realize) ______ that there are only four weeks to the end of term. 5 At midnight 2 days ago, someone (pass) _______ by my window. 6 We (sit) ___________ in the café when they saw us

Lọ nào chứa natri hiđroxit nồng độ cao nhất? Giải thích lý do em biết điều này. đây là bài về sự khuếch tán nha mọi người làm nhanh cần gấp ^^

em caan kqua mn à làm nhanh nhé mn hiuhu

PART B. GRAMMAR AND VOCABULARY I. Choose the best answer A, B, C, or D to complete the sentence. 1. The ___________is fast in big cities. A. inner-city B. pace of life C. sense of community D. residential area 2. Smart home _________is also known as home automation. A. design B. technology C. architecture D. technique 3. The concert was incredible and Issac’s singing just ________ me ________. A. stayed/away B. blew/away C. gave/away D. threw/away 4. Most of my classmates live in the _______________ . A. city center B. center city C. city’s center D. center of city 5. We are planning on ________________ before 11 a.m tomorrow. A. checking in B. setting in C. coming in D. dropping out 6. Has he got __________ comics on the shelf? А. a little B. much C. a lot D. a lot of 7. There is ______ butter in the fridge. Can you buy some? A. a few B. a little C. little D. few 8. Would you like _________ milk tea? A. any B. some C. few D. many 9. I want to___________ friends with other people. A. to make B. make C. making D. makes 10. The holiday are usually a time for family ___________and outing. A. gather B. reunion C. reunite D. tog

Mk đg cần gấp ạ T.T, các bạn giúp mình với ạ T.T Câu 1: My little brother set the table .........plate, bowls, spoons and glasses. A. by B. in C. into D.with