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P
1
17 tháng 6 2023
32. Tom is strong so he can lift that heavy table
33. Nam's father used to drink a lot of wine
34. We have been in Sapa for 2 years
35. l don't mind to help you repair the radio
36.He climbed a tree in order to get a better view
37. Did Jame Watt invent the steam engine?
38. This is the first time she has seen a more unusal festival than this
39. An important experiment is being carry out by the scientists
40. Cheese is made from milk
CHÚC EM HỌC TỐT NHÁ 
LB
1
9 tháng 10 2021
b: Xét ΔABH vuông tại H có
\(AB^2=AH^2+HB^2\)
hay AH=12(cm)
Xét ΔAHB vuông tại H có
\(\sin\widehat{B}=\cos\widehat{C}=\dfrac{AH}{AB}=\dfrac{12}{13}\)
\(\cos\widehat{B}=\sin\widehat{C}=\dfrac{5}{13}\)
\(\tan\widehat{B}=\cot\widehat{C}=\dfrac{12}{5}\)
\(\cot\widehat{B}=\tan\widehat{C}=\dfrac{5}{12}\)
NV
2
5 tháng 12 2021
8833,62753 : 10101 x 100
= 8833,62753 : 1010100
= 0.0087453
HT
H
1
DT
Đỗ Thanh Hải
CTVVIP
5 tháng 11 2021
2 she had got the price of the contest, she would be happy now
3 I had gone to the concert last night ,I would be tired
4 John had finished all his homework, he could see a movie now
5 we had listened to my mother, we wouldn't be in trouble right now
Ex5
1 you arrive at the offcie earlier than I do, please turn on the air-conditioner
2 Were it not snowy, the children would go to school
3 he not died so young, he would be a famous musician
4 Were I you, I would take care of my car
5 not very bad-tempered, his wife would give him soon are marrage
6 Had she not got married at such an early age, he would be at university
19 tháng 1 2022
\(a+a.\frac{3}{2}+a:\frac{2}{7}=252\)
=>\(a+a.\frac{3}{2}+a.\frac{7}{2}=252\)
=>\(a.\left(1+\frac{3}{2}+\frac{7}{2}\right)=252\)
=>\(a.\left(1+5\right)=252\)
=>\(a.6=252\)
=>\(a=42\)
Vậy \(a=42\)
19 tháng 1 2022
A+Ax3/2+A:2/7=252
A+Ax3/2+Ax7/2=252
Ax(1+3/2+7/2)=252
Ax6=252
A=42
HT
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