Điện tích q1,q2 đặt tại 2 điểm M, N cách nhau MN=2d một điện tích dương q3=q1 đặt trên đường trung trực MN cách MN một đoạn là x hãy tìm độ lớn

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83

What ia the sum if the first 7 terms of the geometric series