1.已經(jīng)線段AB的長(zhǎng)為8CM.點(diǎn)C在AB上.且AC=√ AB*√ BC,則AC的長(zhǎng)為

1.已經(jīng)線段AB的長(zhǎng)為8CM.點(diǎn)C在AB上.且AC=√ AB*√ BC,則AC的長(zhǎng)為
2.已知X/a-b=y/b-c=z/c-a(a,b,c互不相等),則x+y+z的值為
3.若x/2=y/7=z/5,且A=y/x+y+z,B=x+zy,C=x+y-z/x.用"＜"號(hào)將A,B,C連接起來
4.已經(jīng)Z≠0,若4x-7y-5z=0,x-2y-z=0,則x:y:z=
5.已知a-b/b=c-d/d,則,a/a+b=_____ b-a/a________
6.若a/2=b/3=c/4,則a+3b+4c/b=__________

數(shù)學(xué)人氣：896 ℃時(shí)間：2020-06-27 03:13:03

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