Si las longitudes de los lados de un tri´angulo son: 130m, 120m, y 50m y es semejante a otro cuyalongitud de sus lados es: 13m, 12m y 5m respectivamente.1) Dibuje los dos tri´angulos en posici´on normal.2) Establezca la correspondencia entre los lados hom´ologos d´andole nombre a los v´ertices de lostri´angulos.3) Establezca la correspondencia entre los´angulos homologos. Me ayudan es de urgencia.

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?