Giai giup mik bai nay voi
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
a: AK<AQ
=>K nằm giữa A và Q
=>AK+KQ=AQ
=>KQ=1cm
b: AK và AC là hai tia đối nhau
=>A nằm giữa K và C
mà AK=AC
nen A là trung điểm của KC
c: BK=1,5+3=4,5cm>AQ
1 plays
2 are reading
3 sing
4 do - do, help
5 is teaching
7 visited
8 doesn't like
9 watch
10 gets - has - brushes - goes - has
11 played - was
12 met
13 are going to have
14 did - do , planted
15 didn't come
16 paint
17 taught
18 have never been
19 takes
20 have - had
21 received
22 is going to invite
23 is waiting
24 talked
25 is going to travel
26 went - didn't buy
27 doesn't learn - will fail
28 washes
29 will be - watches
30 will phone
2 are reading
3 sings
4 do - do - help
5 is teaching
7 visited
8 doesn't like
9 watch
10 gets - has
6. 10 brushes - goes
6. 30 has
11 played - was
12 met
13 will have
14 did - do - planted
15 didn't come
16 paint
17 taught
A=1472-2.47.147+472
A = (147 - 47)2
A = 1002 = 10000
Bài này dùng hằng đẳng thức (A -B)2 = A2 - 2AB +B2 đó ban.
Cững dễ thui. hihi