1,C
2,D
3,B
4,B
5,D
6,C
7,B
8,D
9,A
10,D

1,
a,Thay x=1,y=2 vào phương trình đã cho:
2.1+2m=m+1 <=>2+2m=m+1<=>m=-1
b,
y=1+1/m-2x/m
2,
a,Thay x=0 vào phương trình (d)
m.0+2y=2 <=> y=1
=>Cặp (0;1) là nghiệm của phương trình.
b,
2-2y=mx
<=>2.(1-y)=mx
<=>1-y=mx/2
Ta có hệ:
1-y=0 và mx/2=0
=>x=0,y=1
=>m(0;1)

KC : 4

Số số hạng : (100-8):+=47

Tổng dãy : (100+8)x47 :2=2538

các bạn cho mình vài li-ke cho đủ 485 với 

A với B có tọa độ bn hả bn.Ko có thì làm kiểu j

Đồ thị hàm số có điều kiện là a khác 0
=> m-3 khác 0 <=>m khác 3

1h=60 phút
60 phút = 3600s
=>Kim giây gặp kim h 3600 lần.Ez mà

A
1,D
2,C
3,C
4,A
5,C
B
1,D
2,D
3,D
4,D
5,C

72,Did you remember the circus that we saw last year ?
73,The circus are coming again in our city
74,My father has tickets of the circus
76,Are you free at this weekend?
77,We will meet at 7pm in outside on theatre
78,The show will begin at 7.30pm
79,I hope we have a good time together
80,I am look forward to seeing you there
Câu 71 mình nhìn ko rõ,Câu 75 mình ko bt làm

61,Larger than this room
62,More exciting than action films
63,More Different than Salvador Dali's painting
64,interested in comic books, too
65,like them,too
66,take photograph and collects coins as her
67,traditional opera is "cheo" and "cai luong"
68,better than my sister
69,Different
70,long as we thought at first

56,He usually do his homework,watch TV or read a book
57,Thomas plays the keyboard and John plays the drumx
58,John ha also written some songs.His sister sometimes sings with us
59,They are hoping to play some concerts one day
60,He sometimes go on day trips with his family.The student like lying on the same and listening to musicon my ipod