a+b=91 b+c=63 a+c=46 a=?b=?c=?
人气：323 ℃ 时间：2020-03-21 09:20:24
解答
a+b+c=1/2(a+b +b+c +a+c)=1/2(91+63+46)=100
c=8
a=37
c=54
推荐
猜你喜欢
- It is my t-___ to have my hair cut
- 在Δabc中,a,b,c分别是角A,B,C的对边.若a=1,c=√3,B=5π/6,则b等于多少
- That is an English car改为一般疑问句该怎么改?
- my sister buys some apples for me in the afternoon该为一般疑问句
- 已知向量a的绝对值=6,向量b的绝对值=4,向量a与向量b的夹角为度,则向量a+2b的绝对值=?
- 将2分之1,3分之2,4分之3...,98分之97,99分之98,100分之99这99个分数相乘,积是多少
- 鲜花开放 扩句
- 1. It took them a long time to ______ again after their quarrel.
