Write a letter to invite a friend to an art exhibition.

$\left \{ {{\dfrac{2}{x-y+1}-\dfrac{3}{x+y-2}=-1} \atop {\dfrac{-3}{x-y+1}+\dfrac{1}{x+y-2}=12}} \right.$ giúp em vs

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Câu 2: Cho P là tập hợp các ước không nguyên tố của số 180. Số phần tử của tập hợp P là ?

V. Complete the sentences with correct forms of words 1. The price of clay, supplies and equipment is a small percentage of the total cost to...................... pottery.(PRODUCT) 2.He started the youth group to keep local ....................... off the streets. (YOUNG) 3. Poem conical hats are believed to come from Tay Ho Village in Hue, which was famous for......................... hat makers.(SKILL) 4.Today, .......................Hang Trong paintings arefound only in museums or fine angalleries.(AUTHENTICITY) 5. Craft village tourism has also proved an .............., receiving great attention from visitors, especially foreign tourists.(ATTRACT) 6.The tribe is concerned with the ........................ of its culture and traditions.(PRESERVE) 7.. The second collection was more decorative, inspired by................and pattern.(EMBOIDER) 8.. Vietnamese people have a strong desire to maintain a distict .......identity. (CULTURE) 9. I’d like to thank everyone for helping to make this day............... for us. (MEMORY)

Cali : Chán như con gián . Nhanh giúp mình nhe Hc onl chán quá :^

Số khối của hạt nhân nguyên tử Canxi bằng 40, hạt nhân có 20 nơtron. Xác định số Z, E của Canxi

help meeeeeeeeeeeeeeeeeeeeeeee 161 a abrupt b appliance c delta d behavior 162 a behave b border c destroy d erupt 163 a disaster b drill c fixture d flashlight 164 a storm b tornado c volcano d border 165 a extensive b highlands c Celsius d trust 166 a battery b can c park d collapse 167 a Celsius b expect c extensive d funnel 168 a fixture b hurricane c lift d strike 169 a border b cyclone c destroy d forecast 170 a laugh b highlands c flashlight d although 171 a volcano b damage c earthquake d teenager 172 a predict b destroy c behavior d preparation 173 a highlands b flashlight c strike d volcanic 174 a bureau b funnel c hurricane d erupt 175 a earthquake b path c southern d thunderstorm 176 a highlands b flashlight c forecast d disaster 177 a fixture b trust c destruction d thunderstorm 178 a roller b tornado c volcano d border 179 a typhoon b roof c kangaroo d look 180 a destroy b disaster c Celsius d trust

Cho tam giác ABC cân tại A có AB = AC = 34 cm; BC = 32 cm. Kẻ đường trung tuyến AM Chứng minh AB + AC >BC + AH.

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