Ai làm giúp với
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
1 If there were a library in my neighborhood, I could borrow books
2 If I had much free time, I could come to your party
3 If she were a bird, she could fly anywhere
4 Ì you don't study hard, you will fail the test
5 The castle was haunted so we were so scared
6 Despite the bad weather, the football match went on
7 Before she worked in this company, she had been married
8 Because of the dangerous acid rain, the leaves of many plants are damaged
9 Unless you try your best, the result will not be good
10 Because of the heavy rain, the match was cancelled
11 I haven't been to Bang Kok before
12 I have learnt English for 10 years
13 After having done some exercise, Kathy had a shower
14 The last time we talked to each other was 2 weeks ago
Bài 2:
a) Xét ΔABD và ΔACE có
AB=AC(ΔABC cân tại A)
\(\widehat{BAD}\) chung
AD=AE(gt)
Do đó: ΔABD=ΔACE(c-g-c)
Suy ra: BD=CE(hai cạnh tương ứng)
mình ko xem được đề
bạn lưu đầy đủ hình ảnh đi rồi mình làm cho
mình cũng lớp 5 luôn
a. \(R=\dfrac{R1\left(R2+R3\right)}{R1+R2+R3}=\dfrac{6\left(2+4\right)}{6+2+4}=3\Omega\)
b. \(U1=U23=U=IR=2.3=6V\)(R1//R23)
\(I23=I2=I3=U23:R23=6:\left(2+4\right)=1A\left(R2ntR3\right)\)
\(\left\{{}\begin{matrix}U2=I2.R2=1.2=2V\\U3=I3.R3=1.4=4V\end{matrix}\right.\)