1.25x0.32x250
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9999X7778+3333X6666=9999×7778+3333×3×2222=9999×(7778+2222)=9999×10000=999900005.6X69.32+138.64X0.05+
设原数为a,前六位数为x,后四位数为y原数=10000x+y=a表达式为[(80x+1)*250+y+y-250]/2=[20000x+250+2y-250]/2=10000x+y=a证毕
2.5x4.4=0.25*44=44/4=1132x0.25x12.5=(8*4)*0.25*12.5=(4*0.25)*(8*12.5)=1*100=1003.64x0.8+6.36x0.8-3.8
再问:谢谢你!
1.25x0.7x0.8=(1.25×0.8)×0.7=1×0.7=0.7再问:那9.8x25呢
1.25x0.25x0.05x64=1.25x0.25x0.05x8×8=1.25x8x0.25x(0.05x8)=10x0.25x0.4=2.5x0.4=1
再答:行吗再答:不对的话请指教再问:等一下,我看看再答:好哒,如果我错了我会接受批评哒再问:你可以把列式手写发过来么?不要图了,手机看不了,发完给采纳再答:1,不能2,不能3,不能4,能5
(1)原式=(5/4)^33×(4^62)×(1/4)^30÷(5^32)=5^(33-32)×4^(-33+62-30)=5×4^(-1)=5/4(2)已知x、y为正整数,且x+2y=3所以,x=y
你好:(125+1.25+12.5)x0.8=125×0.8+1.25×0.8+12.5×0.8=100+1+10=111
15x888+32x0.125x0.25=15×8×111+4×8×0.125×0.25=120×(100+10+1)+(1×1)=12000+1200+120+1=1332119.98x37-199
X^2/4-y^2/32=1a^2=4,b^2=32,c^2=4+32=36故右焦点F坐标是(6,0)AF^2=(xo-6)^2+yo^2=(2xo)^28xo^2-yo^2=32xo^2-12xo+
1.25X0.7X0.8=1.25X0.8X0.7=1X0.7=0.7希望对您有所帮助
MainboardG+CPUX250AMDTT240/250VGA:2Gversion3,highcapacityHarddrive:500GSeagateMainframe-box:70-80Pow
再问:第一题中间那个黑黑的是x号吗再答:对
=1.5×(0.6×0.8+1.25×0.8)=1.5×(0.48+1)=1.5×1.48=2.22
将x0变为3X1的矩阵即将x0转置相当于x0=x0'
12.5x0.25x0.05x37x6.4=12.5×0.25×0.05×37×0.4×8×0.2=12.5×8×0.25×0.4×0.05×0.2×37=100×0.1×0.01×37=3.712.
这个很明显x>1然后就是猜测了,如果根据图象的话,应该是选D.(1.75,2)