Giups m vs...
Đọc tiếp
Giups m vs ạ
K
Khách
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
Những câu hỏi liên quan
V
1
4 tháng 11 2021
Bài 6:
\(A=3+\left(3^2+3^3\right)+\left(3^4+3^5\right)+...+\left(3^{2020}+3^{2021}\right)\\ A=3+3^2\left(1+3\right)+3^4\left(1+3\right)+...+3^{2021}\left(1+3\right)\\ A=3+4\left(3^2+3^4+...+3^{2021}\right)⋮̸4\left(3⋮̸4\right)\)
9 tháng 11 2021
Bài 2:
b: \(\Leftrightarrow x^2=10\)
hay \(x=\pm\sqrt{10}\)
NN
21 tháng 7 2021
1. how far is it from here to the nearest post office?
2 how far is it from new york to california?
3. how far is it from your house to your family store
4 how far is it from beijing to berlin
5 how far is it from your hotel to the beach
DT
Đỗ Thanh Hải
CTVVIP
21 tháng 7 2021
1 How far is it from here to the nearest post office?
2 How far is it from New Yorn to California?
3 How far is it from your house to the your family store?
4 How far is it from Beijing to Berlin?
5 How far is it from your hotel to the beach?
\(\Leftrightarrow\left\{{}\begin{matrix}\dfrac{3}{4}x+3y=6\\\dfrac{2}{3}x+3y=6\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}\dfrac{1}{12}x=0\\\dfrac{1}{4}x+y=2\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}x=0\\y=2\end{matrix}\right.\)