It takes paul 6 hours to wash a car. If john helps it takes 2.5 hours. How long does it take john to wash the car by himself?

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?

Find the condition that the zeros of the polynomial f(x) = x^3+3px^2+3px+r may be in a. p.

Solve for x. −3/4(x+2)=6 enter your answer in the box