()9.-HiJohn.？―ItsLucymydog.Herlegishurt.A.HowareyouB.WhathappenedC.Who'sthatD.What'sLucylike
( ) 9. -Hi John. ？
―Its Lucy my dog. Her leg is hurt.
A. How are you B. What happened
C. Who's that D. What's Lucy like
B
解方程组 (x+y)/6 -(x-y)/4=0 (2x-y)/3+(x-2y)/2=9 x= y= 2020-05-16 …
若y与x－1成正比例,且当x＝-2时y＝9(1)y与x的函数解析式为(2)当x＝9若y与x－1成正 2020-05-17 …
求下列二次函数的图像与y轴的交点的坐标(1)y=x^2+6x+9(2)y=9-4x^2(3)y=( 2020-06-02 …
一道有关完全平方式的题用完全平方公式填空:4-12(X-Y)+9(X-Y)^2=解得：4-12(X 2020-06-27 …
问题：3的x次方=4,3的y次方=6,求9的2x-y次方+27x-y次方的值.答案：9^2x-y+ 2020-07-17 …
下列函数在自变量的取值范围内,自变量越大,函数值越小的函数有哪几个?①y＝-9/x②y=11/y③ 2020-07-25 …
设集合M={x|y=2x+3,x属于R},N={y|x^2-y=0,x属于R},则集合M交集Ny= 2020-08-02 …
()9.-HiJohn.？―ItsLucymydog.Herlegishurt.A.Howareyo 2020-10-30 …
数学题(急)(1)7x^2-63(2)a^3-a(3)3a^2-3b^2(4)y^2-9(x+y)^ 2020-11-01 …
9（X-Y）3次方中括号—1/9(X-Y)M+5次中括号(Y-X)2次2设M平方+M=1,求M3+2 2021-02-09 …