???

câu đou ạ ?

Ko đăng bài kiểm tra ạ

à bài này mình nộp r nên mình mới lên check đáp án do cô chưa trả về ạ

\(-\left(-x\right):\left(-15\right).2=16\)

\(\Rightarrow x:\left(-15\right)=8\)

\(\Rightarrow x=-120\)

Vậy: \(x=-120\)

Nhanh giúp mình với mn

Tìm x hả?

Giới hạn này không tồn tại

6 How often does your grandfather often listen to the radio

7 How often do you go to the gym

8 What did they send

9 What time did he leave the party

10 Where did he go

11 Who did he meet for coffee

12 Why did she called the firemen

13 How did he go to school

14 What does lan like doing

15 Where was your father last months

16 How much is the dictionary

17 How long did it take to finish the composition

18 Who bought a poster

What did Mrs Robinson by

19 Where is a restaurant

20 What did her neighbor give her

21 How was the homework yesterday

22 Do you have magaazine and newspapers

23 How often do you go to the movies

à cái đó là you, tại mình nhìn lên câu 9

chọn B ạ, nghiệm đơn thì cx xem như nghiệm phân biệt

B

\(d\left(G;\left(ABCD\right)\right)=\dfrac{1}{3}d\left(S;\left(ABCD\right)\right)=\dfrac{1}{3}.\dfrac{a\sqrt{3}}{2}=\dfrac{a\sqrt{3}}{6}\)

\(S_{\Delta ACD}=\dfrac{1}{2}S_{ABCD}=\dfrac{a^2}{2}\)

\(\Rightarrow V=\dfrac{1}{3}.\dfrac{a^2}{2}.\dfrac{a\sqrt{3}}{6}=\dfrac{a^3\sqrt{3}}{36}\)

15 phần 14

\(\frac{7}{5}+\frac{4}{7}-\frac{9}{10}=\frac{69}{35}-\frac{9}{10}=\frac{15}{14}\)