Giups mk nha
K
Khách
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Những câu hỏi liên quan
VT
8
TV
3
NQ
8
24 tháng 7 2017
1+3-2+5-7+4-2-7+5+6-4+7-1+2
= 10
cậu nhé !!!
k mình nha !!!
VN
3
23 tháng 7 2017
C = 6 / 15.18 + 6 / 18.21 + .......... + 6 / 87.90
3c= 3/15.18 + 3/18.21+...........+3/87.90
=1/15 - 1/18 + 1/18 -1/21 +.............+1/87-1/90
=1/15-1/90
=75/1350
C=75/1350 X 2
C=75/675 NHỚ TK CHO MÌNH NHA BẠN !
23 tháng 7 2017
C=6 x \(\frac{1}{3}\left(\frac{1}{15}-\frac{1}{18}+\frac{1}{18}-\frac{1}{21}+.....+\frac{1}{87}-\frac{1}{90}\right)\)
C= 6 x \(\frac{1}{3}\left(\frac{1}{15}-\frac{1}{90}\right)\)
C= 6 x \(\frac{1}{3}x\frac{1}{18}\)
C =1/9
HV
4
17 tháng 10 2018
Bạn không nên biết nhiều nó đâu khi chưa đủ 18 tuổi
10 tháng 8 2016
\(-1,62+\frac{2}{5}+x=7\)
\(-1,62+0,4+x=7\)
\(-1,22+x=7\)
\(x=7-\left(-1,22\right)\)
\(x=8,22\)
DT
1
Chuyển các câu sau sang bị động
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==> This flower is watered (by my father) every morning.
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==> The accident was caused in this city (by some drunk drivers).
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==> Tom’s parents will be visited (by him) next month.
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==> The secretary wasn’t phoned (by the manager) this morning.
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==> This house and these cars are going to be painted for Christmas day by the Greens.
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==> Has the most valuable painting in the national museum been stolen (by the thieves)?
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==> The new president will be interviewed on TV (by some people).
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==> How many languages are spoken in Canada(by them)?
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Chúc pạn hok tốt!!!