意思就是一些人在猪圈里面
猪圈里面总共有22个头(包括人和猪的),72个腿,问有多少人多少猪
设有x人 22-x猪
则2x+4(22-x)=72
x=8,则有8个人14只猪
There are some people who are working in the hoghouse where there are some pigs.In all there are 22
There are some people who are working in the hoghouse where there are some pigs.In all there are 22
Heads and 72 feet,including all the people and pigs.
How many people and pigs are there in the hothouse?
Heads and 72 feet,including all the people and pigs.
How many people and pigs are there in the hothouse?
英语人气:834 ℃时间:2019-08-19 00:19:11
优质解答
我来回答
类似推荐
猜你喜欢
- 1收一道英语的阅读短文完成练习
- 2已知(-4x+3y)(-4x-3y)减去多项式A的差是(4x-3y)²,则多项式A为________________.
- 3在13和52两个数里_能被_整除,_是_的因数,_是_的倍数.
- 4小球的重力为20牛,它在空气中运动所受的阻力为4牛,小球在上升过程中合力的大小为多少牛?方向是什么?;
- 5元素R的气态氢化物RH3中含氢的质量分数为17.65%,R原子核内有7个中子
- 6铁,碳 作原电池两极,氯化钠作 电解质溶液,正负极反应方程是什么?
- 7如图,三角形ABC中,AC=BC,AD垂直BC于D、BD=1,AD=2
- 8某粗盐溶液中,含有少量的氯化钙、氯化镁、硫酸钠和泥沙.进行以下操作可将杂质除去:①过滤;②加适量盐酸;③加过量氢氧化钠溶液;④加过量碳酸钠溶液;⑤加适量氯化钡溶液.正确
- 9关于励志的名言警句
- 10【高二选修】椭圆E经过A(2,3),对称轴为坐标轴,焦点F1,F2在X轴上,离心率e=1/2