Giúp mik vs Đang gấp ak Mik cảm ơn

Viết dạng so sánh hơn của các tính từ và trạng từ sau: 1.hot 2. slowly 3. bad 4. good 5. big

Giải giúp mình bài toán này với. Mình đang cần gấp

Giải phương trình sau: √2x -1 = 5

MỌI NGƯỜI GIẢI HỘ EM VỚI Ạ !!! PLEASE

II.Read the text carefully,then decide whether the following statements are true (T) or false (F): Our life would be hard without rest and recreation.And people have many different ideas of how to spend their free time.If you enjoy doing a thing or activity,interest,enthusiasm,or pastime that is undertaken for pleasure or relaxation,done during one's own time.A person's hobbies depend on his age,character and personal interests.An interesting thing to one person can be boring to another.That's why some people prefer reading,cooking,knitting,collecting,playing a musical instrumment,photography or playing computer games while others prefer dancing,travelling,camping or sports. 1.____ A hobby is anything that you enjoy doing in your free time. 2.____ Different people have the same hobbies. 3.____ A hobby can provide us with relaxation. 4.____ Your hobby may be changed as you get order. 5.____ One person's hobby may be boring thing to another person. 6.____ Playing sports is not a hobby.

Bài 7: Với mọi số tự nhiên n chứng minh các p/s sau tối giản: a) $\frac{2n+1}{2n+3}$ b) $\frac{n+1}{3n+4}$ c) $\frac{2n+3}{3n+5}$ Bài 8: So sánh 2 p/s: a) $\frac{7}{17}$ và $\frac{9}{17}$ b) $\frac{-9}{40}$ và $\frac{9}{-41}$ c) $\frac{-6}{7}$ và $\frac{28}{-49}$ d) $\frac{63}{64}$ và $\frac{32}{33}$ e) $\frac{64}{73}$ và $\frac{45}{51}$ f) $\frac{99}{-98}$ và $\frac{9}{17}$

Tứ giác ABCD có AC vuông góc với BD. Biết AD=5cm, AB=2cm, BC=10cm. Tính độ dài CD.

CHIA ĐỘNG TỪ TRONG NGOẶC Ở THÌ ĐÚNG 1.Lan (not have) .................. many friends in her new school 2.Hung (come) ...............from Vinh but he (stay).................with his relatives in Ho Chi Minh city at the moment 3.We not (drive)...............to work everyday.We (go) ...................by bus. 4.Trang ....................(not be) in her room at the moment.She........(cook) in the kitchen 5.Would you like .............(have) breakfast with eggs ,children? 6.Lien .....(not go) to the movie theater tomorrow .She ..............(stay ) at home and watch TV. 7.Let's ...........(meet)at o'clock in front of the park. 8.Ba can (fix) ................the lights. 9.What should we (do) ..............this evening? 10.Next Sunday is Nga's birthday. She (invite).............some friends for her birthday party.

Cho tam giác ABC, góc A=90 độ . Gọi E,F là hình chiếu của H lên AB,AC. Chứng minh: a) AB^2/AC^2 = BH/CH b) BC^2 = 3AH^2+BE^2+CF^2 c) AB^3/AC^3 = BE/CF