在MBC中,设P,Q,R分别是直线AB,BC,CA上的点,并且,,.证明三线AQ,BR,CP共点的充要条件是λμv=1.
命题P:(x+3)2+(y-4)2=0,命题q:(x+3)(y-4)=0,x,y∈R,则p是q成立的()
A.充分而非必要条件
B.必要而非充分条件
C.充要条件
D.既非充分也非必要条件
guaranteed that R’s profit share would not be less than $25,000 for the six months to 31 December 2004. The profitsharing
arrangements after R’s admission were P 50%, Q 30%, R 20%. The profit for the year ended 31 December
2004 is $240,000, accruing evenly over the year.
What should P’s final profit share be for the year ended 31 December 2004?
A $140,000
B $139,000
C $114,000
D $139,375
设P={x|x2—4x+3<0},Q={x|x(x-1)>2},则P∩Q等于()
A.{x|x>3}
B.{x|-1<x<2}
C.{x|2<x<3}
D.{x|1<x<2}