Đề bài : Em hãy giới thiệu về một quyển sách mà em yêu thích. Các bạn đừng viết giới thiệu sách tiếng việt lớp 5 nhá, Mai mình phải nộp rùi nhanh nhá ! Cảm ơn trước !

giải cứu em vs mấy cái bài này khó quá. Nghĩ mãi ko dc

Cho biểu thức A= 5+$5^2$+$5^{3}$ +$5^{4}$ +...+$5^{2019}$ . Chứng tỏ rằng 4A+5 là số chính phương. Ai nhanh là 5 sao và ctlhn.

Mình sẽ vote 5 sao câu trả lời hay nhất và cảm ơn ạ Chỉ kiểm tra lại kết quả thui t còn nộp cho cô nữa Mỗi bài 3 ạ

Giúp mik 2 bài này nhé plsssssss

Give the right form of the verbs in brackets: 1 . I (be)............ sorry I (forget).............. that fellow’s name already. 2 . Jack (find) ..............no trouble with my English lessons up to now. 3 . Michael (work)................... thirty eight hours a week. 4 . At present, that author (write)................. a historical novel. 5 . The weather generally (get)............... quite hot in July and August. 6 . How long (you / learn) .............. English? 7 . My brother (just / graduate) ....................... from Oxford University. 8 . That brown briefcase (belong) ..................... to Mr. Smith. 9 . Julia (wait) ............... for you since noon. 10.The swimming bath (open)......... at 9.00 and (close)............ at 18.30 every day. 11.At what time (you / usually / have) .................. dinner? 12.Well! I (remember) .............that fellow’s name now. 13.Where are you? _ I’m upstairs. I (have)................... a bath. 14.Will you wait a minute while I (look) .................through the text? 15.He (sleep) .............. , so he can't hear you now. 16.Tom is very tired because he (run) .................... for an hour. 17.They (go).......................... home after they (finish) ..............their work. 18.We’ll go out when the rain (stop) .......... 19.Miss. Helen (help)................... as soon as she (finish) .................her work. 20.I (give)................... him your letter when I (see).................. him tomorrow.

Khi truyền tải điện năng, ở nơi truyền đi người ta cần lắp * 5 điểm Biến thế giảm điện áp. Biến thế tăng điện áp. Biến thế ổn áp. Cả biến thế tăng áp và biến thế hạ áp. E đang kiểm tra giúp e nhanh vs chính xác nx ạ

$\frac{193}{21}$ xấp xỉ bao nhiêu?

helpp meeeeeeeeeee !!!!!!!!!!!!! I write full setences , using given words or phrases 1 cave/a hole/the rocks/that/you can get inside 2 vietnamese/believe/first footer/can bring/ether good luck/bad luck 3 three hospital,/this international one/best II link the following sentences with 'and' , 'but','although','because'or'so' . leave out the subjects where possible 1 some people say watching TV is passive . we learn a lot from it . we still have time for practicing what we see and learn from TV 2 your bab is 15 months old . she shouldn't watch TV . she won't be shortsighted 3 in my free time , i want to watch cartoons . my little sister wants to watch the game show III rewrite the following sentences . use imperative sentences 1 you must listen to the referee 2 you shouldn't be noisy when you play the game 3 you mustn't cheat in the game 4 you must pay attention to the rules of this game 5 you can't be late for the tournament

Tìm số nguyên x -x=20=-(-15)-8