a) -6 + 7 +13 + |6| b) 9 +7 - (|9| +3)

Giải thích câu tục ngữ: "Lá lành đùm lá rách" bằng 1 bài văn Cứu em với, em cần gấp

Tính: $lim_{x->0}\frac{1-cosx-\frac{1}{2}sin^2x}{x^4}$

Em hiểu biết như thế nào là giảm phân

Làm được mình cho 5vote Ghi luôn kết quả nhé

121.There is a play............. at the Youth Theater tonight. a.in b.of c.on d.from 122. Are you free................Monday? a.to b.at c.on d.from 123. Very few Vietnam people had TV sets.............1960s. a.in b.at c.on d. from 124. Don’t forget to brush your teeth................ every meal. a. before b.at c. after d.from 125. The street is full of traffic from morning.................. night. a.in b.at c.on d.from 126 We will meet.............. six o’clock on Monday morning. a. to b.at c.on d.from 127. She lived..............America.........1969. a.in/in b.at/in c.on/at d.from/in 128. What is ............TV to day? a.to b.at c.on d.from 129. I’m interested in volleyball. I often play it............... Sunday evening. a.to b.at c.on d.from 130.Marie Curie was born..............Poland..................1867. a. at/in b.in/in c.on/at d.from/in 131. He studied................ Oxford University. a.to b.at c.on d.from 132. He died.................. April 1st, 2000. a.to b.at c.on d.in 133 She is always good................telling funny stories. a.to b.at c.on d.from 134.This is ______ new classmate . a. we b.us c.our d. ours 135.We are ________ class 7A. a.to b.at c.on d.in 136.Hoa has _______ of friends in Hue . a.some b.a lots c.lots d.any 137.Her old school ______ many students . a. doesn’t have b. don’t have c. have not d. not have 138. What’s your _______ of birth ? a.day b.daily c. date d.time 139. Lan’s brother is a _________ . He writes for ‘ Tuoitre’. a. writer b. journalist c. nurse d.president 140.There are a ________ empty apartments near here. a. little b. some c. few d. any 141.This flat is more ________ than that one. a. cheap b. expensive c. bigger d. expensiver 142.Most of the students enjoy________ books. a. read b. to read c. reading d. to reading 143. _______ you have a test tomorrow morning ? a. Will b. Do c. Are d. Have

1) $x^{2}$ – 25) + (x – 5)(2x – 11) = 0 2) ($x^{2}$ – 6x + 9) – 4 = 0 3) $\frac{x+3}{x+1}$+$\frac{x-5}{x}$=2 4) 7 – (2x + 4) = - (x + 4) 5) $\frac{3x-1}{3}$ 6) $\frac{2(3x+5}{3}$-$\frac{x}{2}$=5-$\frac{3(x+1)}{4}$ 7) $x^{2}$ – 4x + 4 = 9

vì sao trong văn bản bài học đường đời đầu tiên nhà văn Tô Hoài đã rất thành công khi miêu tả nhân vât dế mèn như vậy<nhà văn đã thực hiên các bước làm văn như thế nào> giúp m với ạ mình cần nộp bài gấp

Complete the second sentence so that it has a similar meaning to the first one: How long have you played basketball? When did _____________________________________________________________________________

Tìm giá trị nhỏ nhất của biểu thức A=|x+19|+|y_5|+1890 Tìm giá trị lớn nhất của biểu thức B=_|x_7|_|y+13|+1945