Aparabola is defined by the equation x^2=3/4y in which direction will the parabola open?

Easy points boii. read it. ya. fresh

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?

Solve the triangle. a = 21°, c = 105°, c = 5