(1000*0.57 x*0.95) y=0.7,这道题如何解
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/20 10:42:42
兄弟题出错了不是+900X是+700X四个数一一相乘得:1000*30+1000*X+(-10X)*30+(-10X)*X就可以得到-10X^2+700x+30000祝开心
0.9x=0.27xx=0再问:谢谢您了再答:不客气如果你觉得有用,请采纳,谢谢
0.9x=x-50x-0.9x=500.1x=50x=500
x=log100^1000=1000log100=1000log10*10=1000*2=2000
f(x)=UV,则见图片.对f(x)=x(x-1)(x-2)(x-3)...(x-1000)只有对(x-1)求导以后变为x(x-2)(x-3).(x-1000),对其他式子求导以后都含有(x-1),当
(x-30)(1000-10x)=10000(x-30)(100-x)=1000100x-3000-x平方+30x=1000x平方-130x+4000=0(x-50)(x-80)=0x=50或80
5(x-1.7)=3(x+0.9)5x-8.5=3x+2.75x-3x=2.7+8.52x=11.2x=5.6再问:x+400分之0.6+400=3分之2,拜托
x-40%x=0.9(1-0.4)x=0.90.6x=0.96x=9x=1.5
x/(x+1000)=5%===>(x+1000)/x=20===>x+1000=20x===>19x=1000===>x=1000/19
0.9(17-3X)+1.4X+0.5X=12.90.9(17-3X)+1.9X=12.915.3-2.7X+1.9X=12.92.4=0.8XX=3
4x×0.9=x+523.6x=x+523.6x-x=522.6x=52x=52÷2.6x=20不懂可追问,有帮助请采纳,谢谢!再问:抱歉我打的是1.4x不是4x再答:4x×0.9=x+521.26x
5%=[(1000-x)/x]*100%?0.05=(1000-x)/x0.05x=1000-x0.05x+x=10001.05x=1000x=1000/1.05=100000/105=20000/2
先把2边都乘上10然后都是整数了,好算由于你题目有点奇怪,就不帮你继续化简了
(3.6-1)x=3.252.5x=3.25x=1.312.5x-0.9x=52.211.6x=52.2x=4.5x-0.72x=0.3360.28x=0.336x=1.28x-0.5x=37.57.
x²+(1000-x)²=4x²(x-1000)²=3x²x-1000=√3x或x-1000=-√3x(√3-1)x=-1000或(√3+1)x=10
X-0.9X=81.90.1x=81.9x=819
原方程去括号,得:5x+(0.9+0.09+0.009+0.0009+0.00009)=5.999995x+0.99999=5.999995x=5.99999-0.999995x=5x=1
10%+20%(1100-x)=20010%x+220-20%=200220-10%=20010%x=20x=200600x+1000(150-x)=100000600x+150000-1000x=1