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T
29 tháng 8 2016
20 + 20 + 20 + 20 + 20 + 50 + 50 + 50 + 50
= 20 x 5 + 50 x 4
= 100 + 50 x 4
= 100 + 200
= 300
x + 50 - 20 = 50 + 20
x + 50 - 20 = 70
x + 50 = 70 + 20
x + 50 = 90
x = 90 - 50
x = 40
Ủng hộ tíck mik nha !!!
9 tháng 4
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NL
Nguyễn Lê Phước Thịnh
CTVHS
19 tháng 9 2025
a: \(2\cdot\sin30^0-2\cdot cos60^0+\tan45^0\)
\(=2\cdot\frac12-2\cdot\frac12+1\)
=0-0+1
=1
b: \(\cot44^0\cdot\cot45^0\cdot\cot46^0\)
\(=\tan46^0\cdot\cot46^0\cdot1\)
\(=1\cdot1=1\)
19 tháng 9 2025
bạn vui lòng để đúng nội dung câu hỏi với lớp nhé
2 tháng 10 2025
111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111=>1
25
25
222323345414256261611171×6277111771×6667778888
222323345414256261611171×6277111771×6667778888
không biết được
25
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