Thời gian xe máy đó đi là : 
10 - 8 = 2 giờ 
Vận tốc của xe máy đó là :
73,5 : 2 = 36,75 km / h 
36,75 km/h = 2,205 m/p 

 

You / to Hoa / because she / can't speak / at the moment / is out

........ You can't speak to Hoa because she is out at the moment.

and aunt / live / at 12 Tran Hung Dao Sreet / I / with my uncle

........... I live with my uncle and aunt at 12 Tran Hung Dao street 

will invite / next week / some of her friends / to her birthday party / She

.........She will invite some of her friends to her birthday party next week 

will meet / We / the movie theater / in from of / tonight

..........we will meet in front of the movie theater tonight 

you / I hope / at my birthday party / and join the fun / will come / tomorrow night

..............I hope you will come and join the fun at my birthday party tomorrow night 

in the evening / The party / and finish / at 5 o'clock /at nine / will begin
The party will begin at 5 o'clock and finish at nine in the evening 

Bạn xem lại đề nhé

\(\frac{81}{\left(-3\right)^x}=-243\)
\(\frac{81}{\left(-3\right)^x}=\frac{-241}{1}=81.1:-241=\frac{-1}{3}\)

a, xOA + AOB = xOB

600 + AOB = 1000

AOB = 1000 - 600

AOB = 400

b

góc AOC

= AOB + BOC

= 400 + 300

= 700

c.

góc xOC

= xOB + BOC

= 1000 + 300

= 1300

Học Tốt nhé ! 

tổng vận tốc của 2 xe là : 

180 : 2 = 90 ( km/giờ )

vận tốc của ô tô đi từ tỉnh a là : 

90 : ( 2 + 3 ) x 2 = 36 ( km/giờ )

vận tốc của ô tô đi từ tỉnh b là :

90 - 36 = 54 ( km/giờ )
 

đáp số : Va: 36 km/giờ

                Vb : 54 km/giờ 

like nhé *.*

a, \(\frac{6^2+3.6^2+3^2}{-13}=\frac{6^2\left(3+1\right)+3^2}{-13}=\frac{144+9}{-13}=\frac{-153}{13}\)
b, \(\frac{81}{\left(-3\right)}=\frac{-243}{x}\)
< Chắc ý bạn là như vậy nhỉ >
=> x = [ ( -243 ) . ( -3 ) ] : 81 
=> x = 9 

What / your / telephone / number/ ?

...... What is your telephone number ?

Would you like / have / dinner / my house / tonight

...... Would you like to have dinner at my house tonight 

I / sorry / my brother / out / moment

......I'm sorry , my brother is out at the moment

We / meet / front / movie theater / 6.45 to night

.......We'll meet in front of the movie theater at 6.45 tonight

What / your / date / birth / ? / it / november / tenth

....... what is your date of birth ?
- It's on november the Tenth

David / be / thirty / his next birthday

.........David will be thirty on his next birthday 

  1/have you seen Philip lately?
Has Philip been seen by you lately ?

   2/haven't you yet found out information about the trains  to Hanoi ?

Haven't information about the train to Hanoi been found yet?

  3/ have you seen any good films so far?

Have good films been seen so far by you?

  4/a pair of robins have built a nest in the porch sine last week.

A nest has been built in the porch since last week by a pair of robins

\(x+\frac{3}{9}+x+\frac{5}{8}+x+\frac{7}{7}=6\)
\(\Leftrightarrow3x+\left(\frac{3}{9}+\frac{5}{8}+\frac{7}{7}\right)=6\)
\(\Rightarrow3x+\frac{47}{24}=6\)
\(\Rightarrow3x=6-\frac{47}{24}\)
\(\Rightarrow3x=\frac{97}{24}\)
\(\Rightarrow x=\frac{97}{24}:3=\frac{97}{72}\)