Let y be the difference of two numbers such that one number varies directly as x while the other number varies inversely as x. if y=-7 when x= -2, and y=5 when x= 1, express y in terms of x. show your work.

Write the expression in simplified radical form. show all steps and work including any foil method work. (hint: use the conjugate. no decimal answers.) (9-2√3)/(12+√3)

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?

How many 2/5s are in 1 and 1/2 plz someone me right now