Based on the diagram, which proportion is false

DB/DC=DA/DB

Look at attachment. has all info needed. need

Jackie purchased 3 bottles of water and 2 cups of coffee for a family for $7.35. brian 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? i need this done

What is the area of the triangle 10 13 12