An advertisement states that a roto sprinkler system can water a circular region with an area of 400ft^2. find the diameter of this region to the nearest thousandth of a foot.​

Two parallel lines are crossed by a transversal. what is value of x

What other information do you need to prove triangle dac=bca by asa

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?