Kate has 4 3/8 yards of fabricand needs 2 7/8 yards to make a skirt. how much extra fabric will she have left after making the skirt

An equation where variables are used to represent known values—function notation true or false

What is the relationship between all triangles that can be drawn given the same three angles

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?