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TG
2
T
:
13
QP
13
QQ
7
3 tháng 1 2022
a: Xét ΔABM và ΔACM có
AB=AC
AM chung
BM=CM
Do đó: ΔABM=ΔACM
b: Xét ΔABC và ΔDCB có
\(\widehat{ABC}=\widehat{DCB}\)
BC chung
\(\widehat{ACB}=\widehat{DBC}\)
Do đó: ΔABC=ΔDCB
DT
Đỗ Thanh Hải
CTVVIP
9 tháng 8 2021
1 How was the lost man found by the police?
2 It was declared that she had won the competition
3 Has the window of the laboratory been changed?
4 Peter asked Janet if he could borrow her typwriter
5 My grandmother told me to feed her dog while she was away
6 My younger sister told me to lend her some more money
7 If I were tall enough,I would join the basketball team
8 If we don't hurry up, we will be late for the exam
9 If he hadn't gone out late last night, he wouldn't have been punished
10 I wish the weather hadn't been bad yesterday
19 tháng 9 2021
\(\Rightarrow\dfrac{2}{3}x-\dfrac{1}{2}x=-\dfrac{1}{3}+\dfrac{2}{5}\\ \Rightarrow\dfrac{1}{6}x=\dfrac{1}{15}\Rightarrow x=\dfrac{2}{5}\)