The area of the base of a triangular pyramid is 90 meters squared, and its height is 6 meters. The volume of a pyramid can be found using the formula V = one-third B h. Which expressions can be used to find the volume of the pyramid? Select three choices. V = (30) (6) meters cubed V = (90) (6) meters cubed V = one-third (90) (6) meters cubed V = one-half (90) (6) meters cubed

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?