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求适合下列条件的方程:①在y轴上的截距为-5,倾斜角的正弦是3/5;②经过点p(3,2),且在两坐标上的截距相等；③经过点A﹙－1,－3﹚,倾斜角等于直线y＝3x的倾斜角的2倍. 直线L的倾斜角3π/4,在y轴的截距为-5的直线方程一般式为? 绝对值小于派的整数有 绝对值小于派π的整数有几个?它们是谁? 绝对值小于9派的所有整数的积为什么 你能写出绝对值小于3.14派的所有整数吗?所有整数, 当a,b为何值时,方程组x1-x2-x3=1 x1+x2-2x3=2 x1+3x2+ax3=b 有唯一解无穷多解或无?另一题 求齐次线性方程组 2x1-5x2+3x4=0x1+2x2-x3+3x4=0-2x1+14x2-6x3+12x4=0 我用07的powerpoint为什么做ppt时输不进中文啊,只能输入英文啊为什么装了Microsoft office 2007,里面的word、excel什么的都用的没问题,但是用powerpoint做ppt时插入了文本框、改好了输入法,却输不进中 英语翻译 梯形的中位线为M,面积为S则它的高为? 一梯形的中位线把这个梯形分成面积为1:2的两部分,设梯形的上底长为a,中位线长为m,下底长为b.求a:m:b的值 一梯形中位线把这个梯形分成面积为1:2的两部分,设梯形的上底长为a,中位线长为m,下底长为b,求a:m:b的值 Zhalong Nature Reserve is over 210,000 square kilometres in area（同义句转换）Zhalong Nature Reserve ___ ___ ___ of 210,000 square kilometres. zhalong nature reserve is 210.000 hectare in area【同义句】zhalong nature reserve is [ ] [ ][ ] [ ]more than 210,000 hectares Zhalong Nature Reserve is in Heilongjiang.S_________,the wetlands got smaller and smallerin the past.The environment was also getting 如图,在三角形ABC中,AB等于AC,AB嘚垂直平分线交AB于N,交直线BC于M.（2）如图,若角A等于70度,求角NMB的大小. 设椭圆x^2/10+y^2=1和双曲线x^2/8-y^2=1的公共焦点分别为F1,F2,P是这两曲线的交点,则△PF1F2的外接圆半径 大运会英语口号 “我越想心里越温暖,就好像太阳晒在我身上一样暖和”是比喻句吗?依照这句的写作方法写一句话,你会怎么写? 已知A,B为实数,且A≥1,若关于X的方程X2-2BX-(A-2B2)=0有实数解且满足2A2-AB2-5A+B2+4=0,求A2+B2的值 there are more than 30 nature reserves to protect pandas.不定式做什么成分? Yunnan Province has more than 100 nature reserves,making it the province with the largest number of 求函数f(x)=x的平方＋2倍X的绝对值的最小值 如何计算梯形中位线? our family is going on a trip ___beijing next week.atfortoof Peter is going on a field trip next week. 的汉语意思 They are going on a field trip next week.改为同义句 This nature reserve is _about_210,000_hectares(对划线部分提问)划线部分是“about 210,000 hectares” zalong Nature Reserve is over 210,000 hectares in area.同义句 The area of that city is about______ that of this one.（ ）A.charged B.to be charged C.being charged D.to have charged 既有因数3又是5的倍数,满足条件的最小奇数是,最大的两位数是 我会给你们赞