Tìm giá trị của m để 2 bất phương trình sau có đúng 1 nghiệm chung

m (m + 3) ≤ x + 5 và m (x + 2) - 3 ≥ x

Xác định m để phương trình 4 - m = \(\dfrac{2}{m+1}\) có nghiệm dương.

punished

didn't prepare => hadn't prepared

=))? what do you mean?

heroic

There isn't any tea left.

1 - B

2 - A

3 - D

4 - C

5 - C

6 - D

7 - A

8 - B

Lần sau chụp rõ chút nhé :< nhìn cái hình mù cả mắt 

1. Sudden changes in water temperature can ..................... mass killings of fish, plants, or amphibians.

A. come up              B. result in      C. dump into            D. thank to

2. Water pollution ............. the death of all forms of life in the water bodies

A. occurs       B. result of    C. creates      D. leads to

3. ........... plastic takes so long to break down, it pollutes the land and ocean

A. Because            B. Due to           C. Even if         D. Although

4. Many flights were cancelled ............... the smoke from forest fires

A. so                     B. because          C. because of   D. result in

5. .......... the garbage dump smells terrible, no one lives around there

A. Because of     B. As     C. As a result of    D. Even though

6. .................. the grain consumption is rising, forests will be cut to provide more room for planting crops

A. since   B. Although   C. unless  D. Due to

7. Grace didn't love nature, ............ she wasn't happy when her group went camping in a jungle

A. but     B. and   C. because   D. so

8. Thousands of fish were killed ............ a discharge of poisonous Chemicals from a nearby factory

A. because     B. lead to  C. result in   D. as a result of

9. .................. the fog, there were no take-oils from the airport yesterday

A. Since          B. Because     C. Owing to    D. Thanks to

19. Plastic rubbish will disappear naturally over time.

A. vanish B. appear C. fade away D. evaporate 

20. If the temperature increases by a few degrees during the next few years, we will run into serious problems.

A. grows up B. rises C. decreases D. shoot up