fast chứ ko phai fat nha

1.The men are  tall..

2.The women are fast.

3.The children are happy.

4.The mice are gray.

5.My teeth are white.

Mỗi kiện hang nhỏ nang bao nhiu thíu đb kia

\(\left(\text{a}^3+b^3\right)\)

\(\text{a}=450x450=202500\\ B=448x452=202496\)

Ma 202500>202496

=> a>b

\(b,-\dfrac{7}{8}x=1-\dfrac{2}{9}\\ -\dfrac{7}{8}x=\dfrac{7}{9}\\ x=\dfrac{7}{9}:-\dfrac{7}{8}=-\dfrac{8}{9}\\ c,\dfrac{7}{6}:x=\dfrac{1}{6}-\dfrac{4}{5}\\ \dfrac{7}{6}:x=-\dfrac{19}{30}\\ x=\dfrac{7}{6}:-\dfrac{19}{30}=-\dfrac{35}{19}\\ d,\dfrac{5}{7}:x=\dfrac{2}{3}+1\\ \dfrac{5}{7}:x=\dfrac{5}{3}\\ x=\dfrac{5}{7}:\dfrac{5}{3}=\dfrac{3}{7}\)

Ta có 

tan 2 = \(\dfrac{sin2}{cos2}\)

ma tan 2 = \(\dfrac{1}{3}\)

=> sin 2 = 1; cos 2 = 3

\(\dfrac{cos2-sin2}{cos2-sin2}=\dfrac{3-1}{3-1}=\dfrac{2}{2}=1\)

\(\dfrac{87}{40}v\text{a}\dfrac{153}{200}\)

Mau chung la 200

=> \(\dfrac{87.5}{40.5}=\dfrac{435}{200}v\text{a}\dfrac{153}{200}\)

ma  435 > 153

=> \(\dfrac{435}{200}>\dfrac{153}{200}=>\dfrac{87}{40}>\dfrac{153}{200}\)

\(\dfrac{9}{8};\dfrac{5}{3}v\text{a}\dfrac{1}{2}\)

Mau chung la 24

=> \(\dfrac{9}{8}=\dfrac{9.3}{8.3};\dfrac{5}{3}=\dfrac{5.8}{3.8};\dfrac{1}{2}=\dfrac{1.12}{2.12}\\ \dfrac{27}{24};\dfrac{40}{24};\dfrac{12}{24}\)

ma  40>27>12

=> \(\dfrac{40}{24}>\dfrac{27}{24}>\dfrac{12}{24}\)

=>\(\dfrac{5}{3}>\dfrac{9}{8}>\dfrac{1}{2}\)

Một \(m^2\) thì can số viên gach la :

\(1000:16=62,5\left(viên\right)\)

Nếu xay \(224m^2\)thì can số viên gach la :

62,5 x  224= 14000 ( viên)

Vay...

:)))???  64 lít cơ ma  chép sai r