45x98
=45x(100-2)
=45x100-90
=4500-90
=4410
猜你喜欢
- 1He ___ back until the work _____ done.A.isn't;will be B.isn't;is C.won't be;will be D.won't be;
- 2电源电压不变,一个定值电阻电阻为R,串联时通过它的电流为1A,那么并联时通过它的电流仍为1A吗
- 3Write you____(friend) name on the invitation card
- 4曲线Y=e^x在点（2,e^2)处的切线与坐标轴所围成的三角形面积是多少?
- 5英国广播公司用英文怎么说?
- 6地球气压正常的是多少啊!
- 7it is col的后边+副词或介词
- 8已知在a,b是非零且不相等的实数,求证:方程x^2-ax-1=0与x^2-bx-1=0没有重根
- 9赏析名句“绿树村边合,青山郭外斜”.
- 10设函数f(x)在数集x上有定义,证明函数f(x)在x上有界的充要条件是它在x上既有上界又有下界