Aun concurso de matemática asisten 10 estudiantes de 2do h, 15 del 3ro b y 20 del 3ro a. se elije por sorteo a un delegado ¿ cual es la probabilidad de que el estudiante elegido sea del 2do h?

The table shows the webster family’s monthly expenses for the first three months of the year. they are $2,687.44, $2,613.09, and $2,808.64. what is the average monthly expenditure for all expenses?

What is the expression in factored form? 225x^2 - 144 a. 9(5x+4)^2 b. 9(5x-4)^2 c. 9(4x+5)(4x-5) d. 9(5x+4)(5x-4)

For what value of (y) is 3^3/3^y =1/9