Se quiere distribuir los números 2, 3, 4, 5, 6 y 7 en las casillas del siguiente tablero de 2 filas y 3 columnas, de tal forma que la suma de los tres números de la primera fila sea 9, el producto de los dos números de la primera columna sea 18 y la suma de los dos números de la tercera columna sea 11.

Which is a graph of a proportional relationship?

What is the prime factorization of 23 ?me with this question

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?