已知x:y=1:2 y:z=2:3 x+y+z=27 求y+z的值已知x:y=1:2y:z=2:3x+y+z=27求y+z的值
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/30 06:12:25
已知x:y=1:2 y:z=2:3 x+y+z=27 求y+z的值已知x:y=1:2y:z=2:3x+y+z=27求y+z的值
已知x:y=1:2 y:z=2:3 x+y+z=27 求y+z的值
已知
x:y=1:2
y:z=2:3
x+y+z=27
求y+z的值
已知x:y=1:2 y:z=2:3 x+y+z=27 求y+z的值已知x:y=1:2y:z=2:3x+y+z=27求y+z的值
因为x:y=1:2 y:z=2:3
所以x:y:z=1:2:3
则 y=2x z=3x
x+y+z=x+2x+3x=12
∴x=2
y=2x=4
z=3x=6
则y+z=4+6=10
很高兴为您解答,【华工王师】团队为您答题.
请点击下面的【选为满意回答】按钮.
已知实数x y z满足x/(x+1)=y/(y+2)=z/(z+3)=(x+y+z)/3,求x+y+z的值
已知实数x y z满足x/(x+1)=y/(y+2)=z/(z+3)=(x+y+z)/3,求x+y+z的值
已知(x+y)(x+z)=x,(y+z)(y+x)=2y,(z+x)(z+y)=3z,求x,y,z
已知X:Y=0.3:1/2,Y:Z=2:3,求X:Y:Z
已知(1)X-Y+Z=0 (2)X+2Y-3Z=0 求X:Y:Z
已知x:y:z=1:3:5,求(2x+3y-z)/(x+y-2z)的值
已知{x:y:z=1:2:3,x+y+z=12,求x、y、z的值
已知{2x-y-z=0,3x-9y+z=0求1,x:y:z
已知x:y:z=1:2:3,x+y+z=24,求x,y,z
已知x-y/x+y=y+z/2(y-z)=z+x/3(z-x),求证8x+9y+5z=0THX..
已知x,y,z 大于0,x+y+z=2,求证 xz/y(y+z)+zy/x(x+y)+yx/z(z+x)大于等于2/3
已知xyz≥0,x+y+z=1,化简x(2y-z)/(1+x+3y)+y(2z-x) /(1+y+3z) +z(2x-y)/(1+z+3x)
已知:x^2/(z+y)+y^2/(x+z)+z^2/(x+y)=0,求x/(z+y)+y/(x+z)+z/(x+y)的值.
已知x/2=y/3=z/4,求下列各式 (1)(x+y+z)/x (2)(x-y+2x/(x-y-2z)
已知实数x,y,z满足x+y+z=2根号x-1+2根号y-1+2根号z-1求X+2Y+3Z
已知实数xyz满足x/(x+1)=y/(y+2)=z/(z+3)=(x+y+z)/3求x+y+z的值
已知x,y,z都是正数,且xyz=1,求证:x^2/(y+z)+y^2/(x+z)+z^2/(x+y)≥3/2
已知x::y:z=3:4:5,(1)求x+y分之z的值;(2)若x+y+z=6,求x,y,z.