In mathematics, the nth harmonic number is defined to be 1 + 1/2 + 1/3 + 1/4 + + 1/n. so, the first harmonic number is 1, the second is 1.5, the third is 1. and so on. write an expression whose value is the 8th harmonic number.

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?

Which shows the graph of the solution set of 3y – 2x > –18?

Asix-sided number cube is rolled twice. what is the probability that the first roll is an even numbe and the second roll is a number greater than 4?