4.56 x 3.2 + 5 x 4.56 + 4.56 :...
Đọc tiếp
4.56 x 3.2 + 5 x 4.56 + 4.56 : 0.1
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QT
5
HQ
Hà Quang Minh
Giáo viên
18 tháng 9 2023
Vì tổng 3 góc trong 1 tam giác luôn bằng 180 độ.
Xét hai tam giác AEB và DEC có:
\(\widehat {AEB} = \widehat {DEC}\)(đối đỉnh) và \(\widehat {BAC} = \widehat {BDC} = {90^o}\).
Suy ra: \(\widehat {ABE} = \widehat {DCE}\)
Xét 2 tam giác AEB và DEC có:
\(\widehat {BAC} = \widehat {BDC} (= {90^o}\))
\(AB=DC\) (gt)
\(\widehat {ABE} = \widehat {DCE}\) (cmt)
=>\(\Delta AEB = \Delta DEC\)(g.c.g)
NX
1
26 tháng 9 2017
43.76 - 4.56 + 80.7
=64.74-4.56+80.7
=4736-224+560
=4512+560
=5072
13 tháng 9 2023
1. What is Mai's address?
2. Who does she live with?
3. Is her house beautiful?
4. It is Nguyen Trai Street.
5. Where does she live?
6. Danang City is his hometown.
7. What is his hometown like?
8. It is a small and quiet village.
9. Do you live with your parents?
10. There're modern towers in my town .
NM
2
18 tháng 2 2020
a) 0.24 : x = 0.34 ( du 0,002 ) b) x : 13.7 = 4.56 ( du 0,05 )
x=0.34\(\times\)0.24+0.002 x=4.56\(\times\)13.7+0.05
x=... x=...
18 tháng 2 2020
a) 0.24 : x = 0.34 ( du 0,002 )
suy ra \(x\times0,34+0,002=0,24\)
=> \(x\times0,34\)=0,238
=> X=0,7
b) x : 13.7 = 4.56 ( du 0,05 )
Suy ra \(x=13,7\times4,56+0,05\)
=> x=62,522
14 tháng 7 2018
1. address / What / Mai's / is ?
=> What is Mai's address ?
2. does / she / Who/ with/ live ?
=> Who does she live with ?
3. her / Is / house / beautiful ?
=> Is her house beautiful ?
4. 56 Nguyen Trai / is / Street / it
=> It is 56 Nguyen Trai Street.
5. she / Where / does/ live ?
=> Where does she live ?
6. Da Nang / hometown /His city is
=> His city is Da Nang hometowm.
7. hometown/ / What/ his/ is ?
=> What is his hometown ?
8. small/ quiet/ village/ and/ It/ is.
=> It is small and quiet village.
9. you/ Do/ your/ live/ with/ parents ?
=> Do you live with your parents?
10. are/ modern/ There towers/ my/ in/ town.
=> There towers in my town are modern.
LT
14 tháng 7 2018
1 . What is Mai's address ?
2 . Who does she live with ?
3 . Is her house beautiful ?
4 . It is 56 Nguyen Trai Street .
5 . Where does she live ?
6 . His city is Da Nang hometown .
7 . What is his hometown ?
8 . It is small and quiet village .
9 . Do you live with your parents ?
10 .There towers in my town are modern .