x×1.5+300=4800﹣x,
2.5x=4500,
x=1800,
4800﹣x,
=4800﹣1800,
=3000;
答:有母鸡3000只,公鸡1800只
若角α的终边经过点P(3,2),则tanα的值为____
下面图形的周长是( )