Derrick's Dog Sitting y Darlene's Dog Sitting están compitiendo por nuevos negocios. El cuidado de perros de Derrick cobra $16 más $9 por hora. El servicio de cuidado de perros de Darlene cobra $20 más $7 por hora. Parte 1 de 2 Complete y resuelva la ecuación que se puede resolver para encontrar la cantidad de horas durante las cuales el costo total será el mismo para los dos servicios. En su ecuación, use x para representar el número de horas de cuidado del perro. la ecuacion___=___ es
El coste total será el mismo para los dos servicios en horas.

Jeffery conducted a survey in his school and found that 30 of the 50 eighth grade students' favorite subject is mathematics. based on the results, jeffery concluded that out of the 200 students in his school, 120 students' favorite subject is mathematics. select the statement that is true about jeffery's conclusion. a. jeffery's conclusion is not valid because the sample was biased since only 200 students were surveyed. b. jeffery's conclusion is valid because the sample was random since all of the students were eighth grade students. c. jeffery's conclusion is valid because the sample was random. d. jeffery's conclusion is not valid because the sample was biased since all of the students were eighth grade students.

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

Four individuals pool money together to start a new business and agree to split the profits equally. n invests $6,000, x invests $2,000, y invests $8,000 and z invests $4,000. if the profits for the first month were $100,000, y receives than if the profits were divided in proportion to how much they invested.