Có 4hs gồm 2 nam và 2 nữ đc xếp vào 2 dãy bàn đôis diện nhau
a hỏi có bao nhiêu cách xếp
b...
Mathematics, 25.10.2021 15:20 jwyapo4
Có 4hs gồm 2 nam và 2 nữ đc xếp vào 2 dãy bàn đôis diện nhau
a hỏi có bao nhiêu cách xếp
b hỏi có bao nhiêu cách xếp mà nam nữ ngồi đói diện nhau
Answers: 3
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How is the equation of this circle written in standard form? x2 + y2 - 6x + 14y = 142 a) (x - 3)2 + (y + 7)2 = 200 b) (x+ 3)2 + (y - 7)2 = 200 (x - 6)2 + (y + 14)2 = 142 d) (x+6)2 + (y- 14)2 = 142
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