9.如果x=2016,那么|x-4|的值是( )
| A. | ±2012 | B. | 2012 | C. | -2012 | D. | 2014 |
5.若代数式$\frac{(x-2)(x+1)}{|x|-1}$的值为零,则x的值为( )
| A. | 2或-1 | B. | -1 | C. | ±1 | D. | 2 |
1.某商场购进商品后,加价40%作为销售价.商场搞优惠促销,决定由顾客抽奖确定折扣.某顾客购买甲、乙两种商品,分别抽到七折和九折,共付款399元,两种商品原售价之和为490元,甲、乙两种商品的进价分别是( )
0 286359 286367 286373 286377 286383 286385 286389 286395 286397 286403 286409 286413 286415 286419 286425 286427 286433 286437 286439 286443 286445 286449 286451 286453 286454 286455 286457 286458 286459 286461 286463 286467 286469 286473 286475 286479 286485 286487 286493 286497 286499 286503 286509 286515 286517 286523 286527 286529 286535 286539 286545 286553 366461
| A. | 200元,150元 | B. | 210元,280元 | C. | 280元,210元 | D. | 150元,200元 |