Find x in the triangle

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?

Nikita wants to apply for student aid to fund her college education. arrange the steps involved in nikita’s application for financial aid

Which of the following represents the length of a diagonal of this trapezoid?