i ll try later by myself 2003

i ll try later
by myself 2003-10-01 00:45:49
28.09
awa ai: school should teach computer and technology..., since morden sciety....
aa: a comany id- card to prevent theft....

math:
1. if xy<0?
a. x3y4/xy <0
b. IxI -IyI < Ix-yI
2. right triangle, a+b=12, c=10, what is the area?
answer: 11

　

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