A bag contains colored tiles.

* 3 tiles are red
* 6 tiles are green
* 3 tiles are blue

A tile will be randomly selected from the bag. What is the probability in decimal form that the tile selected will be green?

True or false? a circle could be circumscribed about the quadrilateral below.

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?

Solve the equation. 2x - 8(x+1)= 6(2x - 3)