HELP Enter your answer and show all the steps that you use to solve this problem in the space provided
x: 7, 8, 9, 10
y: 11, 13, 15, 17
PLEASE SHOW YOUR WORK

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180

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?

50 points~ ! i have to turn this in tomarrow