试题与答案

若x3m-2+y2n-m=-5是二元一次方程,则m+n=______.

题型:填空题

题目:

若x3m-2+y2n-m=-5是二元一次方程,则m+n=______.

答案:

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小题1:unfortunately/unluckily小题2:created小题3:characters 小题4:appeared小题5:confuse小题6:founded 小题7:ruins小题8:poured小题9:convenient小题10:replace题目分析:小题1:有逗号隔开,所以这里应该...

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The Gadget Co produces three products, A, B and C, all made from the same material. Until now, it has used traditional absorption costing to allocate overheads to its products. The company is now considering an activity based costing system in the hope that it will improve profitability. Information for the three products for the last year is as follows: A B CProduction and sales volumes (units)15,000 12,000 18,000Selling price per unit $7.50 $12 $13Raw material usage (kg) per unit 2 34Direct labour hours per unit 0·10·15 0·2Machine hours per unit 0·5 0·7 0·9Number of production runs per annum 16 12 8Number of purchase orders per annum 24 28 42Number of deliveries to retailers per annum 48 30 62The price for raw materials remained constant throughout the year at $1·20 per kg. Similarly, the direct labour cost for the whole workforce was $14·80 per hour. The annual overhead costs were as follows:$Machine set up costs 26,550Machine running costs 66,400Procurement costs 48,000Delivery costs54,320Required:

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