小说哥哥拜托饶了我
帅哥美女拜托拜托1个回答2023-03-20 10:42
因为△ABD△BDC为等腰三角形、AB=√3,
所以AD=√3
BD=√(AD²+AB²)=√6
所以BC=√6
同理DC=2√3
四边形ABCD的周长=AB+AD+BC+DC=4√3+√6
面积=(AB+DC)*AD/2=4.5
数学题,哥哥姐姐,拜托2个回答2022-09-06 01:45
正方形面积是:9/10*9/10=0.81平方米
多:1-0.81=0.19平方米
懂英语的大哥哥大姐请来! 拜托2个回答2022-12-20 08:00
I know many parters’ ages is less than mine !
I know many mates are younger than I
So I must study hard to study English
So I must study English hard
it is a very good school I think in my hurt
It is a very good school in my heart
My favorite is playing badminton it could become thinner than me , now
I am fond of playing badminton because it could make me thinner
It’s too big It is so big
哥哥托海等你的故事?1个回答2024-02-04 11:40
这是一个关于牧羊人和养蜂女,在可可托海相遇、相爱的故事,也正是因为爱,她选择默默离开,带着孩子赶着驼队悄悄的去了远方,很凄美,很感人的故事,被写成了歌《可可托海的牧羊人》广为传唱。曲调悲伤,如泣如诉,写出人间真爱,唱出醉人真情,养蜂女犹如惊鸿一瞥,在光阴的深处,留给牧羊人无尽的遐想。
数学题一道,哥哥姐姐,拜托了!1个回答2022-09-07 15:55
首先m≠a, n≠b, 否则m,n二直线是同一条.
二直线均过点(4、5), 带入:
4a + 5b +1 = 0
4m + 5n +1 =0
后者减去前者:4(m - a) + 5(n - b) = 0
(n - b)/(m - a) = -4/5
这是经过点A(a、b),B(m、n)的直线方程的斜率.
设该直线方程为: y = (-4/5)x + c
该直线过点(4、5): 5 = -16/5 + c
c = 41/5
该直线方程为: y = (-4/5)x + 41/5
变为: 4x + 5y = 41