(x+2.5%20000)/(x+y+20000)=5%(y+15%20000)/(x+y+20000)=20%现有20kg原料,原料内BUOH含量15% AA含量2.5%,如果需要是原料里的BUOH含量变为20%、AA含量变为5% 请通过理论计算来确定需要加多少克BUOH和AA?
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 00:38:56
![(x+2.5%20000)/(x+y+20000)=5%(y+15%20000)/(x+y+20000)=20%现有20kg原料,原料内BUOH含量15% AA含量2.5%,如果需要是原料里的BUOH含量变为20%、AA含量变为5% 请通过理论计算来确定需要加多少克BUOH和AA?](/uploads/image/z/3979045-37-5.jpg?t=%28x%2B2.5%2520000%29%2F%28x%2By%2B20000%29%3D5%25%28y%2B15%2520000%29%2F%28x%2By%2B20000%29%3D20%25%E7%8E%B0%E6%9C%8920kg%E5%8E%9F%E6%96%99%EF%BC%8C%E5%8E%9F%E6%96%99%E5%86%85BUOH%E5%90%AB%E9%87%8F15%25+AA%E5%90%AB%E9%87%8F2.5%25%EF%BC%8C%E5%A6%82%E6%9E%9C%E9%9C%80%E8%A6%81%E6%98%AF%E5%8E%9F%E6%96%99%E9%87%8C%E7%9A%84BUOH%E5%90%AB%E9%87%8F%E5%8F%98%E4%B8%BA20%25%E3%80%81AA%E5%90%AB%E9%87%8F%E5%8F%98%E4%B8%BA5%25+%E8%AF%B7%E9%80%9A%E8%BF%87%E7%90%86%E8%AE%BA%E8%AE%A1%E7%AE%97%E6%9D%A5%E7%A1%AE%E5%AE%9A%E9%9C%80%E8%A6%81%E5%8A%A0%E5%A4%9A%E5%B0%91%E5%85%8BBUOH%E5%92%8CAA%EF%BC%9F)
(x+2.5%20000)/(x+y+20000)=5%(y+15%20000)/(x+y+20000)=20%现有20kg原料,原料内BUOH含量15% AA含量2.5%,如果需要是原料里的BUOH含量变为20%、AA含量变为5% 请通过理论计算来确定需要加多少克BUOH和AA?
(x+2.5%20000)/(x+y+20000)=5%
(y+15%20000)/(x+y+20000)=20%
现有20kg原料,原料内BUOH含量15% AA含量2.5%,如果需要是原料里的BUOH含量变为20%、AA含量变为5% 请通过理论计算来确定需要加多少克BUOH和AA?
(x+2.5%20000)/(x+y+20000)=5%(y+15%20000)/(x+y+20000)=20%现有20kg原料,原料内BUOH含量15% AA含量2.5%,如果需要是原料里的BUOH含量变为20%、AA含量变为5% 请通过理论计算来确定需要加多少克BUOH和AA?
2.5%20000是啥意思,是0.025*20000吗
因式分解x(x+y)(x-y)-x(x+y)^2
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
化简y(x+y)+(x+y)(x-y)-x^2
(x+y)(x-y)-(x-y)^2如题 (x+y)(x-y)-(x-y)^2
【2(x-y)(x-y)(x-y)-8(x-y)(x-y)(x+y)+6y(x-y)(x-y)]/2(x-y)(x-y)
x^2(x-y)+(y-x)
x(x-y)2-(y-x)3
[2/3x-2/x+y(x+y/3x-x-y)]/x-y/x
化简:{2/3x-2/(x+y)[(x+y)/3x-x-y]}/(x+y)/x
计算2/3x-2/x+y(x+y/3x-x-y)/x-y/x
化简3x-2/(x+y)[(x+y)/3x-x-y]÷(x-y)/x
【(x-y)^2+(x+y)(x-y)】除以 2x
[(x-y)²+(x+y)(x-y)]除以2x
计算:y-x分之x+y+x-y分之y-y-x分之2x-y
[(x-y)^2-(x+2y)(x-2y)]/y
y=20000/x+2x的y的最小值
计算[2x^2-(x+y)(x-y)][(-x-y)(y-x)+2y^2]
(x+y)^2(x-y)^2-(x-y)(x+y)(x^2+y^2)分解因式