Is this statement always, sometimes or never true, and why: When a, b and c are integers in the equation y = ax^2 + bx +c, the vertex has integer coordinates.

The ratio of two numbers is 5 to 4. the sum of the numbers is 99. what number is the greater of the two numbers?

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

This stem-and-leaf plot represents the heights of the students on ralph's basketball team. one student's height is missing from the plot. if the mean height of all the students on the team is 61 inches, what is the missing height? a. 55 in. b. 59 in. c. 61 in. d. 65 in.