To repair a roof that is 12 feet off the ground, Mr. Albert leans a 17 foot ladder against the side of the building. To reach the roof, how far away from the building should he place the base of the ladder?
Round your answer to the nearest hundredth.
In feet

Subtract 8 1/6 - 4 5/6 . simplify the answer and write as a mixed number.

The graph of which of the following will be parallel to the graph of 4x – 3y = –12? a.y= 4/3x -3/2 b.6x-4y=-8 c. y=3/4x+1 d.4x- 2y=-12

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?