giups em với ạ
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giups em voi a
17 tháng 1 2022
c: \(=4\sqrt{5}+4\sqrt{3}-4\sqrt{3}-2\sqrt{5}=2\sqrt{5}\)
CT
1
giups mk voi
NV
Nguyễn Việt Lâm
Giáo viên
2 tháng 6 2021
Pitago cho tam giác vuông ABM vuông tại M:
\(BM=\sqrt{AB^2-AM^2}=3\)
Hệ thức lượng tam giác vuông ABC:
\(AB^2=BM.BC\Rightarrow BC=\dfrac{AB^2}{BM}=\dfrac{25}{3}\)
\(\Rightarrow CM=BC-BM=\dfrac{16}{3}\)
\(AC=\sqrt{BC^2-AB^2}=\dfrac{20}{3}\)
S
15 tháng 8 2023
I.
B. drives => rides
D. somtimes => by bus (by car,...)
B. hot => cold
B. does => do
B. spend => spending
C. with => in
A. are => is
A. How long => how often
D. later => ago
A. goes => go
V.
I study English on Tuesday
Does your mother drive you to school?
The students are playing right now.
They are playing games on the playground.
Our teacher is short and has long brown hair.
She is wearing a blue T-shirt and jeans.
My friend is an active boy.
I am watching a film with my friend.
My teacher is a smart and funny woman.
Would you like to come to my party?
I'm going to my English club this Sunday.
T
1
TM
1
LT
7
1 to smoke a lot
2 to their customs
3 get used to staying up late
4 used to be some trees in this field
5 to live in Paris
6 to drink a lot of coffee
7 used to drinking beer
8 to staying up late
9 to be a statue in front of it
10 to the new rule