Giúp e gấp vs ạ mai e thi r
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Easter is an important religious holiday in a lot of countries in the world.
Less electricity will be used in the future.
What is the weight of this big bag?
an hour walking to walk yesterday
better not eat too much fat food
4 Easter is an important religious holiday in a lot of countries in the world
II
1 Less electricity will be used in the future
2 What is the weight of this bag?
3 I spent an hour walking to work yesterday
4 You'd better not eat too much fat food
a: Theo đề, ta có hệ phương trình:
\(\left\{{}\begin{matrix}-a+b=-20\\3a+b=8\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}a=7\\b=8-3a=8-3\cdot7=-13\end{matrix}\right.\)
#include <bits/stdc++.h>
using namespace std;
double x,y;
int main()
{
cin>>x>>y;
cout<<fixed<<setprecision(2)<<x/y;
return 0;
}
Câu 11: C
Câu 13: B
Câu 14: B
Câu 15: D
Câu 16: C
Câu 17: D
Câu 18: C
Câu 19: A
Câu 20: B
II
1 A
2 B
3 A
4 B
I
1 carefully
2 careful, you will fall off your bicycle
3 to wash clothes by hand
4 the largest city in population, isn't it
2
1 How often is the flower festival celebrated
2 what do you always have on THanksgiving
3 Who did Peter when to Da nang last month with?
4 Whose are these picture?