x=30 k nhe 

Định m để 2 đg thg cắt nhau. khi đó tìm quỹ tích giao điểm của 2 đồ thị

a) d1: y=2x+m; d2:y=1

b) d1: y=-x+2m; d2: y=-1

mn giup e vs ah, tks nhìu..=))

Định m để 2 đg thg cắt nhau. khi đó tìm quỹ tích giao điểm của 2 đồ thị

a) d1: y=2x+m; d2:y=1

b) d1: y=-x+2m; d2: y=-1

mn giup e vs ah, tks nhìu..=))

Tìm m để h/s song song, vuông góc

\(d_1:y=\frac{m}{1-m}x+\frac{2\left(m+2\right)}{m-1}\) ;

\(d_2:y=\frac{3m}{3m+1}x-\frac{5m+4}{3m+1}\)

Tìm m để h/s song song, vuông góc

\(d_1:y=\frac{m}{1-m}x+\frac{2\left(m+2\right)}{m-1}\) ;

\(d_2:y=\frac{3m}{3m+1}x-\frac{5m+4}{3m+1}\)

Cho d1: y= -5(x+1)

d2: y=mx+3

d3: y=3x+m

Tìm m để 3 đường thẳng đồng quy

mn giup e vs ah, tks nhìu..=))

Cho d1: y= -5(x+1)

d2: y=mx+3

d3: y=3x+m

Tìm m để 3 đường thẳng đồng quy

mn giup e vs ah, tks nhìu..=))

Tìm và chữa lỗi sai:

1. Mr. Brown agreed to let Tom to work in a department store for a few hours a week.

2. I stopped working there because I was tired of to do the same work day after day.

3. He would rather doing any job than be out of work.

4. Would you mind to check the figures again?

5. He invited me to having dinner with him and his family.

6. Faraday’s father was not rich enough to sending him to school.

7. My little girl insisted on go out by herself.

8. Let’s stop to watch so much TV so that we can read or go out instead.

9. She left the house in a hurry without to say goodbye to us.

10. It is necessary for we to learn a foreign language nowadays.

MN giup e vs, thanks mnnnn