На деякому підприємстві перша машина виробляє 15%, друга – 45%, третя – 40% всіх деталей. В їх продукції браку, відповідно 8,6,3 %. Випадково вибрана деталь виявилася дефектною. Яка ймовірність того, що вона виготовлена другою машиною?

Kevin and randy muise have a jar containing 78 coins, all of which are either quarters or nickels. the total value of the coins in the jar is $13.90. how many of each type of coin do they have?

He concluded that a heavier object dropped from the same height as a lighter object will land

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?