xds+x6+alloy自行车价格

翟鬼苗1820小明将97*6加多少的和错算成97*6加几结果得数与正确答案相差864正确答案是多少? -
奚霞常18524061114 ______ 解:设加的这个数是x97X(6+x)-(97X6+x)=86497x-x=86496x=864 x=864/96 x=9 正确答案是:97X(6+9)=97X15=1455

翟鬼苗1820850x6的积未尾有( )个0,它的积是()位数. -
奚霞常18524061114 ______ 解: 850x6 =(800+50)x6 =800x6+50x6 =4800+300 =5100 850x6的积未尾有(2)个0,它的积是(4)位数.

翟鬼苗1820mathematic 程序问题Min= X1+ X2+ X3+ X4+ X5+ X6+ X7+ X8+ X9+ X10+ X11;X1+1>=9;X2+1>=9;X3+2>=9;X4+2>=3;X5+1>=3;X6+2>=3;X7+1>=6;X8+2>=... -
奚霞常18524061114 ______[答案] 求解列式如下: MIN X1+ X2+ X3+ X4+ X5+ X6+ X7+ X8 ST X1>=10 X1+X2>=8 X3+X1+X2>=9 X4+X1+X2+X3>=11 X5+X2+X3+X4>=13 X6+X5+X3+X4>=8 X7+X6+X5+X4>=5 X8+X7+X6+X5>=3 END GIN X1 X2 X3 X4 X5 X6 X7 X8

翟鬼苗1820请问x+x2+x3+x4+x5+x6+x7+x8+x9=17.39,x等于多少啊?(注:x后面的数字为*次方)着急啊, -
奚霞常18524061114 ______[答案] x+x2+x3+x4+x5+x6+x7+x8+x9=17.39 x=1739/4500

翟鬼苗1820请问大神知道下面这个方程怎么解吗?手工解决,要求满足方程条件,给出最优解minZ= X1+X2+ X3+ X4+ X5+ X6+ X7S.T:  X1+ X3+ X4+ X5+ X6+X7≥46... -
奚霞常18524061114 ______[答案] X1+ X3+ X4+ X5+ X6+X7≥46 X1+ X2+ X4+ X5+X6+ X7≥48 X1+ X2+ X3+ X5+X6+ X7≥52 X1+ X2+ X3+ X4+ X6+X7≥46 X1+ X2+ X3+ X4+ X5+X7≥42 X1+ X2+ X3+ X4+X5+ X6≥62 X2+ X3+X4+ X5+ X6+ X7≥58 全部相加得 6(X1+X2+ X3+X4+ X5+ X...

翟鬼苗1820(8+2/3)*6 1/3*5/12+3/1*1/4 用简便方法计算 急用!!!!!!! -
奚霞常18524061114 ______ (8+2/3)*6 =8*6+2/3*6 =48+4 =52 1/3*5/12+1/3*1/4 =1/3(5/12+3/12) =1/3*2/3 =2/9

翟鬼苗1820204x6+204=?用简便方法计算 -
奚霞常18524061114 ______ 204x6+204=?用简便方法计算204x6+204=204*(6+1)=204*7=1428

翟鬼苗1820x8+x6+x4+x2+1=0 化简 -
奚霞常18524061114 ______[答案] x8+x6+x4+x2+1=(x4-x3+x2-x+1)(x4+x3+x2+x+1)

翟鬼苗1820x9次方+x6次方+x3次方 - 3 因式分解 -
奚霞常18524061114 ______[答案] x^9+x^6+x^3-3 =x^9-x^6+2x^6+x^3-3 =x^6(X^3-1)+(2x^3+3)(x^3-1) =(x^6+2x^3+3)(x^3-1) 前半项可以换元,然后二次方程求根公式继续分解

翟鬼苗18202角A=3角B=4角C怎么求A的度数 -
奚霞常18524061114 ______ A B C 是三角形的内角吗2A=3B=4C=K 则 A=K/2 B=K/3 C=K/4 A+B+C=(6+4+3)K/12=(13K)/12=180 K=12*180/13 则 A=K/2=1080/13