Ai giúp mk
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VH
31 tháng 5 2018
https://www.google.com.vn/search?q=%E1%BA%A3nh+chibi+d%E1%BB%85+th%C6%B0%C6%A1ng+v%C3%A0+%C4%91%E1%BA%B9p&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwjd6d2Sga_bAhXEW5QKHWrjDZ0QsAQIIw&biw=1366&bih=663
* Link đó !
TL
1
TL
0
TL
1
LD
0
26 tháng 1 2018
\(a,\frac{7}{x}=\frac{x}{28}=>x\cdot x=28\cdot7=>x^2=196=>x^2=14^2\)\(=>x=14\)
\(b,\frac{10+x}{x+17}=\frac{3}{4}=>\left(10+x\right)\cdot4=\left(x+17\right)\cdot3=>40+x4=x3+51\)\(=>x4-x3=51-40=>x=11\)
TP
22 tháng 5 2018
First, I am going to visit Ha Long Bay for two days
Then, I am going to see Ngoc Son Temple in Ha Noi for a week
Next, I am going to visit Hue for a week.
After that, I am going to see the citadel
Next, I am going to stay at a friend's house in Nha Trang for three days
Then, I am going to stay with their uncle in Ho Chi Minh City for a week
After that, I am going to visit the beach and swim in Nha Trang
Next, I am going to visit my friend
Then, I am going to see a movie
After that, I am going to wath a soccer match
HN
4 tháng 2 2018
2x−92402x−9240=39803980⇒⇒2x−92x−9=240.3980240.3980=117117
2x−9=1172x−9=117⇒⇒2x=117+9=1262x=117+9=126⇒⇒x=126:2=63
1)60
1)4
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