Find the degree measures of the angle whose cosine is −√3/2.
a. 50° + n times 360° and 30° + n times 360
b. 120 +n times 360 and 60 + n times 360
c. 120+n times 360 and 240 +n times 360
d. 150+n times 360 and 210 +n times 360

Equation for the calculation double 2 and then add 5

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?

Asap (i need to finish this quick) graph complete the sequence of transformations that produces △x'y'z' from △xyz. a clockwise rotation ° about the origin followed by a translation units to the right and 6 units down produces δx'y'z' from δxyz.