Trình bày những thành tựu nổi bật của tĩnh Hà Tĩnh trong 30 năm tái lập tỉnh (1991-2021) .Bạn cần phải làm gì để góp phần xây dựng Hà Tĩnh ngày càng phát triển (khoảng 4.000 từ )

twenty year ago only large companies (1)….. computer. they were large machines which filled rooms and they always had big tapes which rent round and round (2)….. the 1950s one is every two families (3)….. britair had a micro – computer – most school also had several (4)….. new machines were much cheaper and much smallr (5)…..the older ones. people used them (6)….. pleasure as well as business. a recent survey showed that over 40% of home computer owners used them mainly for games. 1/ a. have b. had c. has d. having 2/ a. on b. at c. in d. of 3/ a. in b. at c. on d. over 4/ a. they b. this c. that d. these 5/ a. that b. over c. than d. as 6/ a. to b. for c. with d. of

các bạn giải giúp mình với ,mình đang cần gấp ạ

Định lí Vi-ét đảo cho phương trình bậc 3?

vẽ mầm đi naooo nl: hmm kiểu mình đang tìm ý tưởng cho tranh vẽ .. vẽ nhân vật nào trong anime giờ (con gái nhaa)

xin chào mn em lè tv mới vẽ 5 con mầm

giúp vs nhanh ạ pleazzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

13A.Tìm cấc số tự nhiên x sao cho : a) x B (12) và 24 < x <80; b) x 13; 10< x <70; c) x Ư (48); x > 8; d) 35 x ; x ≤ 10; e) x BC (5,10,15); x < 100; f) x ƯC (20,30,40); x > 2. 13B. Tìm các Số tự nhiên x, sao cho: a) x B(15); 20 < x < 80; b) x 12; 10 < x < 64; c) x Ư (42); x > 4; d) 34 x; x 6; e) x BC (3,5,6); x < 80; f) x ƯC (12,16,20); x > 1. giúp em ạ!

TEST I: điền từ transmission growth developed energy popular basic possible improved practical regular The development of television Television was not really invented. Many scientists invented or (1) __________ parts of the systems that have become the television systems we know now. Radio, of course, was necessary before television could be (2) __________ , because the television uses the same principles of electromagnetic waves that radio does. As soon as radio became possible, the possibility of television(3) _________ was also known, but it took many years for it to become (4) ____________ . British and American scientists helped to develop the (5) ___________ ideas that made television (6) ___________ , but it was a Russian who made th first practical television system. By 1923, Vladimir Zworykin , a Russian, had invented a camera tub that could turn pictures into electric (7) ___________ . By 1929, Zworykin had built a television system that work. By 1935, (8) ____________ television broadcasts were begun in Germany. the first broadcasts in the United States began in 1939, but television did not really become (9) ___________ until later the Second World War. Between 1945 and 1955 there were rapid (10) ___________ in the practical use of television.

A (x) = 2x^4 + 5x^3 - x^2 + 2x +2 B(x)=-x^4 - 5x^3 + 3x^2 - 2x + 1 x= (-1) có là nghiệm của đa thức ko?