What is the name of the property given below if a b = 0 then a = 0 b = 0 or both a = 0 and b = 0?

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?

You receive 15% of the profit from a car wash how much money do you receive from a profit of 300

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*