2:a=a:b=1:5,那么a=( ),b=( ).

来源：百度知道编辑：UC知道时间：2024/06/26 00:54:06

a=(10),b=(50).

a=10 b-50
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a=10
b=50

a=10 b=50

因为2:a=1:5
所以a=10
又因为a:b=1:5 且a=10
所以b=50

由2:a=1:5
得a=10
又知a:b=1:5 且a=10
b=50

a=10
b=20

已知5|2a+1|=-4(b-3)*(b-3),a*a*a*a*a*a+b*b=? 已知2a=b：5，那么a：b=？若AB=2,A+B=5,那么A平方+B平方+1＝（） 5a=3b ,那么a:b=( ):( ) 如果a×3=b×5,那么 a:b= a+b=5 那么a-b等于多少啊？？集合A＝｛1,a,b｝,B={a,a^2,ab} 且A=B 求实数a,b 已知:2A+B=8,A-B=0.7 那么A=( ) B=( ) a^2=a+1,b^2=b+1,a\=b,a^5+b^5= 如果1/a+1/b=1/a+b 那么 b/a+a/b=?